研究業績 (2024/04/01現在)   杉山 睦


※ここには査読審査(レフェリー)があり、かつ英語での発表に限り掲載しています。
国内での発表や著書など、全ての発表関係の情報はこちらから(理科大の研究者情報ページへ)



.[レフェリーつき論文]

 

 

160. Tzu-Ying Lin, Chi-Feng Hsieh, Ayaka Kanai, Takahiko Yashiro, Wen-Jing Zeng, Jian-Jie Ma, Sung-Fu Hung, and Mutsumi Sugiyama:

      “Radiation resistant chalcopyrite CIGS solar cells: proton damage shielding with Cs treatment and defect healing via heat-light soaking”

       Journal of materials Chemistry A, 12 (2024) 7536.

 

159. Ayaka Kanai, Ray Ohashi, Kunihiko Tanaka, Hideaki Araki, Mutsumi Sugiyama:

      “Effects of the growth process on surface morphology of Cu2(Sn1−xGex)S3 thin films”

       Journal of Materials Science: Materials in Electronics, 35 (2024) 526.

 

158. Keisuke Tomono and Mutsumi Sugiyama:

        Investigating electrical properties and crystal growth in NiO thin films by spray pyrolysis and electrostatic spray deposition

       Japanese Journal of Applied Physics, 63 (2024) 025504.

 

157. Kana Ueda and Mutsumi Sugiyama:

        Effect of monolithic photovoltaic photoelectrochemical integrated Cu(In, Ga)Se2 related co planar device on water splitting reaction

       Japanese Journal of Applied Physics, 63 (2024) 011005.

 

156. Kana Ueda and Mutsumi Sugiyama:

        Effect of the energy band bending on surface by Cu-poor layer of Cu(In, Ga)Se2-related photoelectrode for water splitting

       Journal of Physics D: Applied Physics, 57 (2024) 135103.

 

155. Takuto Maeda and Mutsumi Sugiyama:

       “Investigation of low-temperature deposition of SnO2 thin film for improving sensitivity of LaOCl/SnO2 heterojunction CO2 sensor using electrochemical impedance spectroscopy”,

       Japanese Journal of Applied Physics, 62 (2023) 115502.

 

154. Mayu Okajima, Hina Nakagawa and Mutsumi Sugiyama:

        Possibility of directly sensing plant stress under environment temperature changes using electrochemical impedance spectroscopy

       Japanese Journal of Applied Physics, 62 (2023) 088002.

 

153. Seira Yamaguchi, Atsushi Sato, Kaori Ajiro, Miyuki Shiokawa, Yuya Hashimoto, Takuto Maeda, Mutsumi Sugiyama, Takeshi Gotanda, Kazuhiro Marumoto:

        Performance improvement mechanisms of perovskite solar cells by modification of NiOx hole-selective contacts with self-assembled-monolayers

       Solar Energy Materials and Solar Cells, 258 (2023)112428.

 

152. Ayaka Kanai, Ryoma Hata, Mutsumi Sugiyama and Kunihiko Tanaka:

      Photoluminescence properties of Cu-poor Cu2Sn1-xGexS3 thin films with varying Ge/(Ge+Sn) ratio”

       Journal of Physics D: Applied Physics, 56 (2023) 265102.

 

151. Mutsumi Sugiyama:

      Introduction of visible-light-transparent novel devices using widegap nickel oxide (NiO) thin film”

       JSAP Review, 2023 (2023) 230410.

 

150. Mayu Okajima and Mutsumi Sugiyama:

      Direct and in situ observations of plants under various light illumination conditions using electrochemical impedance spectroscopy”

       Japanese Journal of Applied Physics, 62 (2023) 027002.

 

149. Wafaa Magdy, Ayaka Kanai, Esam. T. El Shenawy, Sherif. A. Khairy, Hussam. H. Hassan, Mutsumi Sugiyama, Fawzy. A. Mahmoud:

      Correlation between some physical properties of pure and Sb doped Cu2SnS3 thin films under the effect of sulfur amount for solar cell application

       Materials Chemistry and Physics, 295 (2023) 127074.

 

148. Ayaka Kanai, Keina Kusatsu, and Mutsumi Sugiyama:

      Influence of Cd, S and Na atoms on photoluminescence in tin sulfide thin films

       Japanese Jounal of Applied Physics, 61 (2022) 125501.

 

147. Mutsumi Sugiyama and Mayu Okajima:

Application of electrochemical impedance spectroscopy and modeling of the novel equivalent circuit for monitoring the cellular tissues,

       Theoretical and Experimental Plant Physiology, 34 (2022) 501-508.

 

146. Keitada Mineo, Shigeyuki Imura, Kazunori Miyakawa, Toshiki Arai , Satoshi Aihara, Mutsumi Sugiyama, and Masakazu Nanba:

Avalanche Multiplication Image Sensor Bonded With Crystalline Se Photoconversion Layer Using SeSe Bonding Process,

       IEEE Transactions on Electron Devices, 69 (2022) 4325.

 

145. ShunsukeNakamur and Mutsumi Sugiyama:

Effect of Ar and H2 mixture gas on SnS thin films deposited by radio frequency (RF) magnetron sputtering,

       Thin Solid Films, 755 (2022) 139329.

 

144. Nanami Urata, Ayaka Kanai, and Mutsumi Sugiyama:

      Elucidation of electrical properties of undoped and Sb-induced Cu2SnS3 (CTS) thin films and degradation properties on CTS thin films and solar cells by intentional proton irradiation

       Japanese Jounal of Applied Physics, 61 (2022) 071001.

 

143. Thomas Fix, Marin Alexe, David Ginley, and Mutsumi Sugiyama:

      Exotic Materials and Innovative Concepts for Photovoltaics

       ACS Applied Energy Materials, 5 (2022) 5297.

 

142. Shigeyuki Imura, Keitada Mineo, Toshiki Arai, Kazunori Miyakawa, Misao Kubota, Satoshi Aihara, Keisuke Nishimoto, Mutsumi Sugiyama, Masakazu Nanba:

      Development of Stacked Image Sensor with Avalanche Multiplication in Surface-enhanced Crystalline selenium-based Photoconversion Layer

       IEEE Sensors Letters, 6 (2022) 3501004.

 

141. Shigeyuki Imura, Keitada Mineo, Yuki Honda, Toshiki Arai, Kazunori Miyakawa, Toshihisa Watabe, Misao Kubota, Satoshi Aihara, Keisuke Nishimoto, Mutsumi Sugiyama, Masakazu Nanba:

      High Sensitivity Crystalline Selenium-based CMOS Image Sensor Using Avalanche Multiplication

       ITE Transactions on Media Technology and Applications, 10 (2022) 52-58.

 

140. Tomohiro Hamada and Mutsumi Sugiyama:

      Fabrication of solar cells with CO2 gas sensing capabilities based on a NiO/ZnO p-n junction for developing self-powered gas sensors

       Japanese Jounal of Applied Physics, 61 (2022) 051003.

 

139. Takahiro Yashiro and Mutsumi Sugiyama:

      Effect of the valence band maximum control of Cu(In,Ga)Se2 photoelectrode surface on water splitting

       Japanese Jounal of Applied Physics, 61 (2022) 054002.

 

138. Keisuke Nishimoto, Kohei Shima, Shigefusa F. Chichibu and Mutsumi Sugiyama:

      Reactive RF magnetron sputtering epitaxy of NiO thin films on (0001) sapphire and (100) MgO substrates

       Japanese Jounal of Applied Physics, 61 (2022) 025505.

 

137. Patrick Nwofe and Mutsumi Sugiyama:

Complexing agents dependent properties of chemically deposited Tin Antimony Sulphide Thin Films for use in sustainable energy devices,

Journal of Electronic Materials, 51 (2022) 1148-1162.

 

136. Kota Takisawa and Mutsumi Sugiyama:

      Tin monosulfide (SnS) epitaxial films grown by RF magnetron sputtering and sulfurization on MgO(100) substrates,

       Japanese Jounal of Applied Physics, 61 (2022) 025504.

 

135. Ishwor Khatri, Pedro Santos, Pedro Anacleto, Deepanjan Sharma, Mohamed Belmoubarik, Nicoleta Nicoara, Mutsumi Sugiyama, Sascha Sadewasser,:

Effect of Se-free Annealing on Cesium Fluoride Treated Cu(In,Ga)Se2 Thin Films and Corresponding Solar Cells,

Physica Status Solidi Rapid Research Letter, 16 (2021) 2100462.

 

134. Nanami Urata, Ayaka Kanai, and Mutsumi Sugiyama:

      Influence of Sb inclusion on morphologies and carrier concentration properties of CTS thin films grown by sulfurization of Cu-Sn precursors

       Japanese Jounal of Applied Physics, 60 (2021) 115503.

 

133. Wafaa Magdy, Ayaka Kanai, Mohamed Abdel-Latif, Fawzy A Mahmoud, Essam El Shenawy, Hussam Hassan, Sherif Khairy and Mutsumi Sugiyama:

      Impact of Na and/or Sb on the CTS thin films and solar cell performance

       Japanese Jounal of Applied Physics, 60 (2021) 105506.

      

132. Ishwor Khatri, Takahiko Yashiro, Mutsumi Sugiyama:

Effect of cesium fluoride treatment in bifacial Cu(In1-x,Gax)Se2 solar cell,

       Thin Solid Films, 736 (2021) 138913.

 

131. Ayaka Kanai, Mutsumi Sugiyama:

Na induction effects for JV properties of Cu2SnS3 (CTS) solar cells and fabrication of a CTS solar cell over-5.2% efficiency,

       Solar Energy Materials and Solar Cells, 231 (2021) 111315.

 

130. Joonam Kim, Naruhide Kato, Shigefusa F. Chichibu, Mutsumi Sugiyama:

Electrical degradation and recovery of NiO/ZnO visible-light-transparent flexible solar cells,

       Japanese Jounal of Applied Physics, 60 (2021) 064001.

 

129. Kazuya Saiga, Tomoyuki Haraguchi, Yasutaka Kitahama, Takuya Hosokai, Hiroyuki Matsuzaki, Dohyun Moon, Mutsumi Sugiyama, Michikazu Hara, Takashiro Akitsu:

Optical Properties of Chiral Azo-Schiff Base Mn(II) and Zn(II) Complexes with Silver Nanoparticles,

       Journal of Materials Science and Chemical Engineering, 9 (2021) 1-10.

 

128. Ishwor Khatri, Mutsumi Sugiyama:

Effect of combined treatment of cesium fluoride as precursor and post-treatment on Cu(In,Ga)Se2 thin film solar cell,

       Applied Physics Letter, 118 (2021) 113901.

 

127. Naruhide Kato, Mutsumi Sugiyama:

Proton irradiation effects on NiO/ZnO visible-light-transparent solar cells for space applications,

       Japanese Jounal of Applied Physics, 60 (2021) 048001.

 

126. Ayaka Kanai, Taichi Tosuke, Hideaki Araki and Mutsumi Sugiyama:

Effects of Ag on the carrier lifetime and efficiency1of (Cu1-xAgx)2SnS3 solar cells,

       Japanese Jounal of Applied Physics, 60 (2021) 035508.

 

125. Shigeyuki Imura, Keitada Mineo, Yuki Honda, Toshiki Arai, Kazunori Miyakawa, Toshihisa Watabe, Misao Kubota, Keisuke Nishimoto, Mutsumi Sugiyama, Masakazu Nanba:

      Enhanced image sensing with avalanche multiplication in hybrid structure of crystalline-selenium-based photoconversion layer and CMOSFETs,

       Scientific Reports, 10 (2020) 21888.

 

124. Ayaka Kanai, Mutsumi Sugiyama:

Emission properties of intrinsic and extrinsic defects in Cu2SnS3 thin films and solar cells,

       Japanese Jounal of Applied Physics, 60 (2021) 015504.

 

123. Patrick Akata Nwofe, Mutsumi Sugiyama:

Tuning the Properties of RF Sputtered SnS Thin Films and Enhanced Performance in RF Sputtered SnS Thin Films Hetero-junction Solar Cell Devices,

       Zeitschrift für Naturforschung A: Physical Sciences, 76 (2021) 181-195.

 

122. Joonam Kim, Takuto Ejiri, Mutsumi Sugiyama:

Investigation of VO2 directly deposited on a glass substrate using RF sputtering for a smart window,

       Japanese Jounal of Applied Physics, 59 (2020) 105506.

 

121. Patrick Akata Nwofe, Mutsumi Sugiyama:

Influence of deposition time and annealing treatments on the properties of chemically deposited Sn2Sb2S5 thin films and photovoltaic behavior of Sn2Sb2S5-based thin film hetero-junction solar cells,

       Zeitschrift für Naturforschung A: Physical Sciences, 75 (2020) 887901.

 

120. Naruhide Kato, Mutsumi Sugiyama:

Electron irradiation resistance of NiO/ZnO visible-light-transparent solar cells,

       Japanese Jounal of Applied Physics, 59 (2020) 101004.

 

119. Ishwor Khatri, Tzu-Ying Lin, Takahiko Yashiro, Mutsumi Sugiyama:

Temperature-Dependent Current-Voltage and Admittance Spectroscopy analysis on Cesium-treated Cu(In1-x,Gax)Se2 Solar Cell before and after Heat-Light Soaking and Subsequent Heat-Soaking Treatments,

       Progress in Photovoltaics: Research and Applications, 28 (2020) 1158-1166.

 

118. Wafaa Magdy, Ayaka Kanai, F. A. Mahmoud, E.T. El Shenawy, S. A. Khairy, H. H. Hassan, Mutsumi Sugiyama:

Effect of rapid thermal annealing on sprayed Cu2SnS3 thin films for solar-cell application,

       Japanese Jounal of Applied Physics, 59 (2020) 105503.

 

117. Mohamed S. Abdel Latif, Wafaa Magdy, Taichi Tosuke, Ayaka Kanai, Amr Hessein, N.M. Shaalan, Koichi Nakamura, Mutsumi Sugiyama, A. Abdel Moniem:

       A comprehensive study on Cu2SnS3 prepared by sulfurization of Cu-Sn sputtered precursor for thin-film solar cell applications,

       Journal of Materials Science: Materials in Electronics, 31 (2020) 14577-145930.

 

116. Phutri Milana, Nurhayati Fry Voni Steky, Yuta Ando, Marolop Simanullang, Mutsumi Sugiyama, Cynthia Linaya Radiman, Veinardi Suendo:

       Effect of Anchoring Groups on Electron Transfer at PorphyrinsTiO2 Interfaces in DyeSensitized Solar Cell Application,

       Macromolecular Symposia, 391 (2020) 201900126.

 

115. Patrick Akata Nwofe, Mutsumi Sugiyama:

Microstructural, Optical and Electrical Properties of Chemically Deposited Tin Antimony Sulphide Thin Films for Use in Optoelectronic Devices,

       Physica Status Solidi A, 217 (2020) 1900881.

 

114. Tzu-Ying Lin, Takahiko Yashiro, Ishwor Khatri, and Mutsumi Sugiyama:

Characterization on Proton-irradiation-damaged Interfaces of CIGS-related Multilayered Compound Semiconductors for Solar Cells by Electrochemical Impedance Spectroscopy,

       Japanese Jounal of Applied Physics, 59 (2020) 058003.

 

113. Ishwor Khatri, Takahiko Yashiro, Lin Tzu-Ying, Mutsumi Sugiyama, and Tokio Nakada:

“Metastable Behavior on Cesium Fluoride-Treated Cu(In1–x,Gax)Se2 Solar Cells”,

Physica Status Solidi Rapid Research Letter, 14 (2020) 1900701.

 

112. Tzu-Ying Lin, Ishwor Khatri, Junpei Matsuura, Kosuke Shudo, Wei-Chih Huang, Mutsumi Sugiyama, Chih-Huang Lai, Tokio Nakada:

      Alkali-induced Grain Boundary Reconstruction on Cu(In,Ga)Se2 Thin Film Solar Cells using Cesium Fluoride Post Deposition Treatment,

       Nano Energy, 68 (2020) 104299.

 

111. José Rosa, Jonas Deuermeier, Pekka J. Soininen, Markus Bosund, Zhen Zhu, Elvira Fortunato, Rodrigo Martins, Mutsumi Sugiyama and Saoussen Merdes:

Control of Eu Oxidation State in Y2O3-xSx:Eu Thin Film Phosphors Prepared by Atomic Layer Deposition: a Structural and Photoluminescence Study,

       Materials, 13 (2020) 93.

 

110. Ishwor Khatri, Tzu-Ying Lin, Tokio Nakada, and Mutsumi Sugiyama,:

Proton Irradiation on Cesium-Fluoride-Free and Cesium-Fluoride-Treated Cu(In,Ga)Se2 Solar Cells and Annealing Effects under Illumination,

Physica Status Solidi Rapid Research Letter, 13 (2019) 1900519.

 

109. Ayaka Kanai, Hideaki Araki, Ryota Ohashi, and Mutsumi Sugiyama:

Sulfurization of Cu2(Sn,Ge)S3 thin films deposited by co-evaporation,

Japanese Jounal of Applied Physics, 59 (2020) SCCD01.

 

108. Ishwor Khatri, Lin Tzu-Ying, and Tokio Nakada, and Mutsumi Sugiyama,:

Effect of Electron Irradiation on CsFFree and CsFTreated CIGS Solar Cells,

       Physica Status Solidi Rapid Research Letter, 13 (2019) 1900415.

 

107. Yuta Ando, Ishwor Khatri, Hironori Matsumori, Mutsumi Sugiyama, and Tokio Nakada:

Epitaxial CIGS Thin Films on Mo Back Contact for Solar Cells,

       Physica Status Solidi A, 216 (2019) 1900164.

 

106. Junpei Matsuura, Ishwor Khatri, Tzu-Ying Lin, Mutsumi Sugiyama, and Tokio Nakada:

      Impact of heat-light soaking and heat-bias soaking on NaF-treated CIGS thin film solar cells

       Progress in Photovoltaics: Research and Applications, 27 (2019) pp.623-629.

 

105. Taichi Tosuke and Mutsumi Sugiyama:

PL properties and defects of SnS layers based on n-type buffer layers/p-type SnS structures,

Japanese Jounal of Applied Physics, 58 (2019) 051004-0104.

 

104. Ryo Tanuma, Mutsumi Sugiyama:

Polycrystalline SnO2 visible-light-transparent CO2 sensor integrated with NiO/ZnO solar cell for self-powered devices,

       Physica Status Solidi A, 216 (2019) 1800749-15.

 

103. Marolop Simanullang, Zehua Wang, Nao Kawakami, Ryu Ogata, Takehiro Yoshida, Mutsumi Sugiyama:

Non-polar GaN thin films deposition on glass substrate at low temperatures by conventional RF sputtering,

Thin Solid Films, 675 (2019) pp.1-4.

 

102. Noboru Katayama, Suguru Osawa, Shunya Matsumoto, Takuma Nakano, Mutsumi Sugiyama:

Degradation and Fault Diagnosis of Photovoltaic Cells using Impedance Spectroscopy,

Solar Energy Materials and Solar Cells, 194 (2019) pp. 130-136.

 

101. Taichi Tosuke, Mutsumi Sugiyama:

Sulfurization growth and HCl etching processes for cubic-phase SnS thin films,

       Physica Status Solidi A, 216 (2019) 1800750-14.

 

100. Ishwor Khatri, Junpei Matsuura, Mutsumi Sugiyama, and Tokio Nakada:

Effect of heat-bias-soaking on caesium fluoride-treated CIGS thin film solar cells,

      Progress in Photovoltaics: Research and Applications, 27 (2019) 22-29.

 

99.   Ryo Tanuma, Hikaru Haga, Mutsumi Sugiyama:

Influence of carrier mobility on sensitivity of room-temperature-operation CO2 sensor based on SnO2 thin film,

       Japanese Jounal of Applied Physics, 57(2018)115503-14.

 

98.   Shinnosuke Tanaka, Hiroki Sato, Yota Ishida, Yanyang Deng, Tomoyuki Haraguchi, Takashiro Akitsu, Mutsumi Sugiyama, Michikazu Hara, and Dohyun Moon:

Photo-Control of Adsorption of Dye Metal Complexes Incorporating Chiral Schiff Base Ligands Containing Azo-Groups on TiO2,

       Journal of the Korean Chemical Society, 62 (2018) pp.328-332.

 

97.   Yusuke Ohteki and Mutsumi Sugiyama:

Electrical properties of ZnO:H films fabricated by RF sputtering deposition and fabrication of p-NiO/n-ZnO heterojunction devices,

Japanese Journal of Applied Physics, 57 (2018) 071101-15.

 

96.   Junpei Matsuura, Kosuke Shudo, Ishwor Khatri, Mutsumi Sugiyama, Tokio Nakada:

Tunable carrier concentration of NaF-treated CIGS solar cells using heat-light soaking and subsequent heating,

       physica status solidi - Rapid Research Letters, 12 (2018) 1800053.

 

95.   Ishwor Khatri, Kosuke Shudo, Junpei Matsuura, Mutsumi Sugiyama, Tokio Nakada:

Impact of heat-light soaking on potassium fluoride treated CIGS solar cells with CdS buffer layer,

       Progress in Photovoltaics: Research and Applications, 26 (2018) 171-178.

 

94.   M. Jellite, J.-L. Rehspringer, M. A. Fazio, D. Muller, G. Schmerber, G. Ferblantier, S. Colis, A. Dinia, M. Sugiyama, A. Slaoui, A. Minj, D. Cavalcol, T. Fix:

Investigation of LaVO3 based compounds as a photovoltaic absorber,

Solar Energy, 162 (2018) 17.

 

93.   Vasudeva Reddy Minnam Reddy, Greta Lindwall, Babu Pejjai, Sreedevi Gedi, K.T. Ramakrishna Reddy, Mutsumi Sugiyama, Zi-Kui Liu and Chinho Park:

“α-SnSe thin film solar cells produced by selenization of magnetron sputtered tin precursors,

Solar Energy Materials and Solar Cells, 176 (2018) 251-258.

 

92.   Shun Yamane, Yuuki Hiyoshi, Shinnosuke Tanaka, Shun Ikenomoto, Takashi Numata, Kazuya Takakura, Tomoyuki Haraguchi, Mauricio A. Palafox, Michikazu Hara, Mutsumi Sugiyama and Takashiro Akitsu:

       Substituent Effect of Chiraldiphenyl Salen Metal (M = Fe(II), Co(II), Ni(II), Cu(II), Zn(II)) Complexes for New Conceptual DSSC Dyes,

J. Chem. Chem. Eng. 11 (2017) 135-151

 

91.   Mutsumi Sugiyama, Satoru Aihara, Yosuke Shimamune, and Hironori Katagiri:

Influence of electron and proton irradiation on the soaking and degradation of Cu2ZnSnS4 solar cells,

       Thin Solid Films, 642 (2017) 311-315.

 

90.   Ishwor Khatri, Mutsumi Sugiyama and Tokio Nakada:

Effects of combined additional indium deposition and potassium fluoride post-deposition treatments on Cu(In,Ga)Se2 thin film solar cells,

       Progress in Photovoltaics: Research and Applications, 25 (2017) 871877.

 

89. Ishwor Khatri, Kosuke Shudo, Junpei Matsuura, Mutsumi Sugiyama, Tokio Nakada:

Comparative study of water and ammonia rinsing processes of potassium fluoride-treated Cu(In,Ga)Se2 thin film solar cells,

Japanese Journal of Applied Physics, 56 (2017) 08MC12-16.

 

88.   Naoyuki Shibayama, Yiwen Zhang, Tetsuo Satake, and Mutsumi Sugiyama:

Modelling of an equivalent circuit for Cu2ZnSnS4- and Cu2ZnSnSe4-based thin film solar cells,

RSC Advances, 7 (2017) pp. 25347-25352.

 

87.   M. Yamaguchi, Y. Tsunoda, S. Tanaka, T. Haraguchi, M. Sugiyama, S. Noor, and T. Akitsu:

Molecular design through orbital and molecular design of new naphthyl-salen type transition metal complexes toward DSSC dyes,

J. Indian Chem. Soc., 94(2017) pp.761-772.

 

86.   Hiroshi Nakai, Mutsumi Sugiyama, and Shigefusa F. Chichibu:

Ultraviolet light-absorbing and emitting diodes consisting of a p-type transparent-semiconducting NiO film deposited on an n-type GaN homoepitaxial layer,

       Applied Physics Letter, 110 (2017) 181102-15.

 

85.   Keita Takahashi, Shinosuke Tanaka, Marin Yamaguchi, Yuki Tunoda, Takashiro Akitsu, Mutsumi Sugiyama, Rakesh Kumar Soni, Dohyun Moon:

Dual purpose bromine-containing Schiff base Cu(II) complexes for DSSC dyes and polymer flame retardants,

       Journal of the Korean Chemical Society, 61 (2017) pp. 129-131.

 

84.   Shuntaro. Mikami, Tsubasa. Yokoi, Hiroki. Sumi, Satoru. Aihara, Ishwor. Khatri, and Mutsumi Sugiyama:

      Effect of sulfur vapor pressure on SnS thin films grown by Sulfurization,

       physica status solidi C, 16 (2017) pp. 1600160-14.

 

83.   Ryuki Shoji, Yoshiki Kayama, Shigefusa F. Chichibu, and Mutsumi Sugiyama:

      Phase transformation during simultaneous chalcogenization of CuIn(S,Se)2 thin films using metalorganic sources,

       physica status solidi C, 16 (2017) pp. 1600159-14.

 

82.   Mutsumi Sugiyama, Tsubasa Yokoi, Akihiko Henmi, Takashi Asano:

Effect of Na on sulfurization growth of SnS thin films and solar cells using NaF/Sn-S precursor,

       Thin Solid Films, 615 (2016) pp. 2528.

 

81.   Ishwor Khatri, Hirofumi Fukai, Hiroshi Yamaguchi, Mutsumi Sugiyama and Tokio Nakada:

Investigation of the Potassium Fluoride Post-deposition Treatment on Cu(In,Ga)Se2 Thin Films and Solar Cells,

Solar Energy Materials and Solar Cells, 155 (2016) 280-287.

 

80. Mutsumi Sugiyama, Hiroshi Nakai, Gaku Sugimoto, Aika Yamada, Shigefusa F. Chichibu:

Electrical properties of undoped and Li-doped NiO thin films deposited by RF sputtering without intentional heating,

Japanese Journal of Applied Physics, 55 (2016) 088003-13.

 

79.   Ryosuke Shoji, Shun Ikenomoto, Nobumitsu Sunaga, Mutsumi Sugiyama, and Takashiro Akitsu:

Absorption Wavelength Extension for Dye-Sensitized Solar Cells by Varying the Substituents of Chiral Salen Cu(II) Complexes,

Journal of Applied Solution Chemistry and Modeling, 5 (2016) 48-56.

 

78.   Xiaohui Liu, Anjun Han, Zhengxin Liu, and Mutsumi Sugiyama:

Effects of the CuS phase on the growth and properties of CuInS2 thin films,

Japanese Journal of Applied Physics, 55 (2016) 015501-14.

 

77.   Hidenori Sakakura, Masayuki Itagaki, and Mutsumi Sugiyama:

Estimation of defect activation energy around pn interfaces of Cu(In,Ga)Se2 solar cells using impedance spectroscopy,

Japanese Journal of Applied Physics, 55 (2016) 012301-14.

 

76.   Hüseyin Sarı, Hidenori Sakakura, Daisuke Kawade, Masayuki Itagaki, Mutsumi Sugiyama:

      Quantification of sputtering damage during NiO film deposition on a Si/SiO2 substrate using electrochemical impedance spectroscopy,

       Thin Solid Films, 592 (2015) pp. 150154.

 

75.   Shao-Wei Chang, Kaoru Ishikawa, and Mutsumi Sugiyama:

      Growth of amorphous ZnSnO thin films by RF sputtering for buffer layers of CuInSe2 and SnS solar cells,

       Thin Solid Films, 589 (2015) pp. 408-411.

 

74.   Daisuke Kawade, Kazuma Moriyama, Fumika Nakamura, Shigefusa F. Chichibu, and Mutsumi Sugiyama:

      Fabrication of Visible-Light Transparent Solar Cells Composed of NiO/NixZn1-xO/ZnO Heterostructures,

       physica status solidi C, 12 (2015) pp. 785-788.

 

73.   Soichi Sato, Hiroki Sumi, Guannan Shi, and Mutsumi Sugiyama:

      Investigation of the sulfurization process of Cu2SnS3 thin films and estimation of band offsets of Cu2SnS3-related solar cell structure,

       physica status solidi C, 12 (2015) pp. 757-760.

 

72.   Shao-Wei Chang, Kaoru Ishikawa, and Mutsumi Sugiyama:

      RF magnetron sputtering deposition of amorphous ZnSnO thin films as a buffer layer for CIS solar cells,

       physica status solidi C, 12 (2015) pp. 688-691.

 

71.   Hikaru Kobayashi, Takashiro Akitsu, and Mutsumi Sugiyama:

      Rietveld Analysis of Dinuclear Cu(II) Complexes Dissociating into Mononuclear Ones,

       International Journal of Current Chemistry, 5 (2014) pp. 35-45.

 

70.   Daisuke Kawade, Shigefusa F. Chichibu and Mutsumi Sugiyama:

      Experimental determination of band offsets of NiO-based thin film heterojunctions,

       Journal Applied Phys. 116 (2014) 163108.

 

69.   F. I. Ezema, Y. Kayama, I. C. Amaechi, T. Hiramatsu, A. C. Nwanya, R. U. Osuji, M. Malik, M. Sugiyama:

      Effect of annealing on the properties of chemical bath deposited CdS buffer layer of CIS solar cells,

       Chalcogenide Letters, 11 (2014) 619-628. 

 

68.   Mutsumi Sugiyama, Hidenori Sakakura, Shao-Wei Chang, and Masayuki Itagaki:

      Investigation of Sputtering Damage around pn Interfaces of Cu(In,Ga)Se2 Solar Cells by Impedance Spectroscopy,

       Electrochimica Acta, 131 (2014) 236-239.

 

67.   Xiaohui Liu, Zhengxin Liu, Fanying Meng, Shigefusa F. Chichibu, Mutsumi Sugiyama:

      Preparation of CuInS2 thin films by sulfurization using ditertiarybutylsulfide,

       Thin Solid Films, 558 (2014) 400-404.

 

66.   Xiaohui Liu, Zhengxin Liu, Fanying Meng, Mutsumi Sugiyama:

      Improvement of Cu(In,Ga)Se2 thin film solar cells by surface sulfurization using ditertiarybutylsulfide,

       Solar Energy Materials and Solar Cells, 124 (2014) 227-231.

 

65.   M. Sugiyama, T. Shimizu, D. Kawade, K. Ramya and K. T. R. Reddy:

      Experimental determination of vacuum-level band alignments of SnS-based solar cells by photoelectron yield spectroscop,

       Journal Applied Phys. 115 (2014) 083508.

 

64.   M. Rajendraprasad Reddy, V. Supriya, M. Sugiyama, and K. T. Ramakrishna Reddy:

      Physical Investigations on ZnO:Ni Layers Deposited by Spray Pyrolysis,

       Conference Papers in Energy, 2013 (2013) 508170.

 

63.   K. T. Ramakrishna Reddy, V. Supriya, Y. Murata, M .Sugiyama:

      Effect of Co-doping on the properties of Zn1 xCoxO films deposited by spray pyrolysis,

       Surface and Coatings Technology, 231 (2013) 149-152.

 

62.   M. Sugiyama, M. Hayashi, C. Yamazaki, N. B. Hamidon, Y. Hirose, M. Itagaki:

      Application of impedance spectroscopy to investigate the electrical properties around the pn interface of Cu(In,Ga)Se2 solar cells,

       Thin Solid Films, 535 (2013) 287-290.

 

61.   M. Warasawa, Y. Watanabe, J. Ishida, Y. Murata, S. F. Chichibu, and M. Sugiyama:

      Fabrication of Visible-Light-Transparent Solar Cells using p-type NiO Films by Low Oxygen Fraction Reactive RF Sputtering Deposition,

       Japanese Journal of Applied Physics, 52 (2013) 021102.

 

60.   M. Rajendraprasad Reddy, M. Sugiyama, and K.T. Ramakrishna Reddy:

      Ni-doping Effect on the Structural and Optical Properties of Sprayed ZnO Thin Films,

       Advanced Materials Research, 602-604 (2013) 1423-1426.

 

59.   Ashraf Mohamed Abdel Haleem, Mutsumi Sugiyama, Masaya Ichimura:

       Sulphurization of the Electrochemically Deposited Indium Sulphide Oxide Thin Film and Its Photovoltaic Applications,

       Materials Sciences and Applications, 3 (2012) 802-806.

 

58.   X H Liu, X M Dou, M. Sugiyama:

      Photoluminescence studies in CuInS2 thin films grown by sulfurization using ditertiarybutylsulfide,

       Jounal of Applied Physics, 112 (2012) 123521.

 

57.   X. H. Liu, X. M. Dou, and M. Sugiyama:

      Photoluminescence Study of Deep Levels in CuInS2 Thin Films Grown by Sulfurization Using Ditertiarybutylsulfide,

       Japanese Journal of Applied Physics 51 (2012) 122403.

 

56.   Y. Hirose, M. Warasawa, I. Tsunoda, K. Takakura, and M. Sugiyama:

      Effects of Proton Irradiation on Optical and Electrical Properties of Cu(In,Ga)Se2 Solar Cells,

       Japanese Journal of Applied Physics 51 (2012) 111802.

 

55.   L. Rajamohana Reddy, N. Revathi, Y. Murata, M. Sugiyama, K.T. Ramakrishna Reddy:

      Characterization of Al co-doped Zn1-xMnxO Films Deposited by Spray Pyrolysis,

       Physics Procedia 25 (2012) 143-149.

 

54.   X. H. Liu, C. Fujiwara, X. M. Dou, S. F. Chichibu, and M. Sugiyama:

       Photoluminescence Study of Defect Levels in CuInS2 Thin Films Grown by Sulfurization Using Ditertiarybutylsulfide,

       Japanese Journal of Applied Physics 51 (2012) 031202.

 

53.   M. Warasawa, A. Kaijo, and M. Sugiyama:

      Advantages of using amorphous indium zinc oxide films for window layer in Cu(In,Ga)Se2 solar cells,

       Thin Solid Films, 520 (2012) 2119-2122.

 

52. K. T. Ramakrishna Reddy, K. Ramya, G. Sreedevi, T. Shimizu, Y. Murata, and M. Sugiyama:

      Studies on the Energy Band Discontinuities in SnS/ZnMgO Thin Film Heterojunction,

       Energy Procedia 10 (2011) 172-176.

 

51.   M. Sugiyama, C. Fujiwara, R. Shoji, and S. F. Chichibu:

      Sulfurization Growth of CuInS2 Thin Film Using Ditertiarybutylsulfide as a Less Hazardous Source,

       Japanese Journal of Applied Physics 50 (2011)065503.

 

50.   C. Fujiwara, T. Sato, Y. Kawasaki, M. Sugiyama, and S. F. Chichibu:

      Growth of Cu(In,Al)(Se,S)2 thin films by selenization and sulfurization for a wide bandgap absorber,

       Japanese Journal of Applied Physics 50 (2011) 05FB07.

 

49.   T. Sato, Y. Kawasaki, M. Sugiyama, and S. F. Chichibu:

      Morphological and Structural Changes in Cu(In,Ga)Se2 thin films by selenization using diethylselenide,

       Japanese Journal of Applied Physics 50 (2011) 05FB05.

 

48.   M. Sugiyama, Y. Murata, T. Shimizu, K. Ramya, C. Venkataiah, T. Sato, and K. T. R. Reddy:

      Sulfurization growth of SnS thin films and experimental determination of balance band discontinuity for SnS-related solar cells,

       Japanese Journal of Applied Physics 50 (2011) 05FH03.

 

47.   Y. Hirose, M. Warasawa, K. Takakura, S. Kimura, S. F. Chichibu, H. Ohyama, and M. Sugiyama:

      Optical and electrical properties of electron-irradiated Cu(In,Ga)Se2 solar cells,

       Thin Solid Films, 519 (2011) 7321-7323.

 

46.   M. Sugiyama, K. T. R. Reddy, N. Revathi, Y. Shimamoto, and Y. Murata:

      Band Offset of SnS Solar Cell Structure Measured by X-ray Photoelectron Spectroscopy,

       Thin Solid Films, 519 (2011) 7429-7431.

 

45.   V. Supriya, T. Sato, M. Sugiyama, K. T. R. K. Reddy:

      Structural and optical properties of cobalt doped sprayed ZnO films,

       Optoelectronics and Advanced Materials Rapid Communications 4 (2010) 20642067.

 

44.   M. Sugiyama, T. Yasuniwa, H. Nakanishi, S. F. Chichibu, and S. Kimura:

Optical and solar cell properties of alpha-ray, proton, and gamma-ray irradiated Cu(In,Ga)Se2 thin films and solar cells,

       Japanese Journal of Applied Physics 49 (2010) 042302.

 

43.  T. Minemura, K. Miyauchi, K. Noguchi, K. Ohtsuka, H. Nakanishi, and M. Sugiyama:

     Preparation of SnS Films by Low Temperature Sulfurization,

      Physica Status Solidi (c) 6 (2009) 1221-1224.

 

42.  A. Miyama, X. Dou, T. Yasuniwa, A. Umezawa, H. Nakanishi, S. F. Chichibu, and M. Sugiyama:

      Fabrication of Zn-doped Cu(In,Ga)Se2 thin film solar cells prepared by Zn diffusion from the gas phase using dimethylzinc,

      Physica Status Solidi (c) 6 (2009)1213-1216.

 

41.  K. Miyauchi, T. Minemura, K. Nakatani, H. Nakanishi, M. Sugiyama, and S. Shirakata:

     Photoluminescence properties of ZnSnP2 single crystal,

      Physica Status Solidi (c) 6 (2009) 1116-1119.

 

40.  S. Masaki, H. Nakanishi, M. Sugiyama, and S. F. Chichibu:

     Ga-doped ZnO transparent conducting films prepared by helicon-wave-excited plasma sputtering,

      Physica Status Solidi (c) 6 (2009) 1109-1111.

 

39.  S. Takahata, K. Saiki, T. Imao, H. Nakanishi, M. Sugiyama, and S. F. Chichibu:

      Fabrication of a n-type ZnO / p-type CuAlO heterojunction diode by sputtering deposition methods,

      Physica Status Solidi (c) 6 (2009) 1105-1108.

 

38.  A. Umezawa, T. Yasuniwa, A. Miyama, H. Nakanishi, M. Sugiyama, and S. F. Chichibu:

      Preparation of Cu(In,Al)Se2 thin films by selenization using diethylselenide,

      Physica Status Solidi (c) 6 (2009) 1016-1019.

 

37.   S. Ando, N. Takayama, M. Sugiyama, H. Nakanishi, and S. F. Chichibu:

      Preparation of CuInSe2 thin films by metal-organic decomposition with oxidation-reduction and subsequent selenization using diethylselenide,

      Physica Status Solidi (c) 6 (2009) 1038-1042.

 

36.   M. Sugiyama, A. Umezawa, T. Yasuniwa, A. Miyama, H. Nakanishi, S.F. Chichibu:

      Growth of single-phase Cu(In,Al)Se2 photoabsorbing lms by selenization using diethylselenide,

       Thin Solid Films, 517 (2009) 2175-2177.

 

35.   M. Sugiyama, K. Miyauchi, T. Minemura, and H. Nakanishi:

      Sulfurization Growth of SnS Films and Fabrication of CdS/SnS Heterojunction for Solar Cells,

       Japanese Journal of Applied Physics 47 (2008) 8723-8725.

 

34.   S. Merdes, A. Kinoshita, Z. Hadjoub, M. Sugiyama, H. Nakanishi, and S. Ando:

      Effect of Deposition Conditions on Photoluminescence of CuInSe2 Thin Films Prepared by Spin Coating Technique,

       Japanese Journal of Applied Physics 47 (2008) 8284-8286.

 

33.   S.Merdes, A.Kinoshita, Z.Hadjoub, M.Sugiyama, H.Nakanishi, M.Sano, and S.Ando:

      Effect of Alternating Cu poor/Cu rich/Cu poor/Cu rich/ Layers of Metal Naphthenates in the Growth Process on the Properties of CuInSe2 Thin Films Prepared by the Spin Coating Technique,

       Thin Solid Films, 516 (2008) 7335-7339.

      

32.   S. Masaki, H. Nakanishi, M. Sugiyama, and S.F.Chichibu:

      Preparation of Ga doped ZnO thin films by helicon-wave-excited plasma sputtering,

       Physica Status Solidi (c) 5 (2008) 3135-3137.

 

31.   S. Takahata, T. Imao, H. Nakanishi, M. Sugiyama, and S. F. Chichibu:

       Helicon-wave-excited plasma sputtering deposition of CuAlO2 thin films,

       Physica Status Solidi (c) 5 (2008) 3101-3103.

 

30.   K. Nakatani, T. Minemura, K. Miyauchi, K. Fukabori, H. Nakanishi, M. Sugiyama, and S. Shirakata:

       Photoluminescence property of ZnSnP2 by solution growth and normal freezing methods ,

       Japanese Journal of Applied Physics 47 (2008) 5342-5344.

 

29.   M. Sugiyama, K. Miyauchi, T. Minemura, K. Ohtsuka, K. Noguchi, and H. Nakanishi:

      Preparation of SnS Films by Sulfurization of Sn Sheet,

       Japanese Journal of Applied Physics 47 (2008) 4494-4495.

 

28.   M. Sugiyama, A. Kinoshita, A. Miyama, H. Nakanishi and S. F. Chichibu:

      Formation of Zn-doped CuInSe2 films by thermal annealing using dimethylzinc,

       Journal of Crystal Growth, 310 (2008) pp.794-797.

 

27. M. Sugiyama, A. Kinoshita, M. Fukaya, H. Nakanishi, S. F. Chichibu:

       Growth of Single-phase CuInGaSe2 Photoabsorbing Alloy Films by the Selenization Method Using Diethylselenide as a Less-hazardous Se Source,

       Thin Solid Films 515 (2007) pp.5867-5870.

 

26. M. Sugiyama, A. Kinoshita, M. Fukaya, Y. Maru, T. Nakagawa, H. Nakanishi, F. B. Dejene, V. Alberts, and S. F. Chichibu:

       The use of diethylselenide as a less-hazardous source in CuInGaSe2 photoabsorbing alloy formation by selenization of metal precursors premixed with Se,

       Journal of Crystal Growth 294 (2006) pp.214-217.

 

25.   F. B. Dejene, M. Sugiyama, H. Nakanishi, V. Alberts, and S. F. Chichibu:

      Influence of the stacking order on structural features of the Cu-In-Ga-Se precursors for formation of Cu(In,Ga)Se2 thin films  prepared by thermal reaction of InSe/Cu/GaSe alloys to elemental Se vapor  and diethylselenide gas      ,

       Physica Status Solidi (c) 3 (2006) pp.2572-2575.

 

24.   A. Kinoshita, M. Fukaya, H. Nakanishi, M. Sugiyama, and S.F. Chichibu:

      Preparation of High Ga-content CuInGaSe2 Films by Selenization of Metal Precursors Using Diethylselenide as a Less-hazardous Source,

       Physica Status Solidi (c) 3 (2006) pp.2539-2542.

 

23.   M. Sugiyama, F. B. Dejene, A. Kinoshita, M. Fukaya, V. Alberts, H. Nakanishi, and S. F. Chichibu:

      Use of Diethylselenide for the Preparation of CuInGaSe2 Films by Selenization of Metal Precursors Premixed with Se,

       Physica Status Solidi (c) 3 (2006) pp.2543-2546.

 

22.   M. Sugiyama, A. Murayama, T. Imao, K. Saiki, H. Nakanishi, and S. F. Chichibu:

      Helicon-wave-excited Plasma Sputtering Deposition of Ga-doped ZnO Transparent Conducting Films,

       Physica Status Solidi (a) 203 (2006) pp.2882-2886.

 

21.   T. Kitamura, X-Q. Shen, M. Sugiyama, H. Nakanishi, M. Shimizu, and H. Okumura:

      Generation of Cubic Phase in Molecular-Beam-Epitaxy-Grown Hexagonal InGaN Epilayers on InN,

       Japanese Journal of Applied Physics Vol. 45 (2006) pp. 5760.

 

20.   M. Sugiyama, M. Kinoshita, and H. Nakanishi:

      Growth of ZnInGaS4 by normal freezing method,

       Journal of Physics and Chemistry of Solids 66 (2005) pp. 2127-2129.

 

19.   S. F. Chichibu, M. Sugiyama, T. Nozaka, T. Suzuki, T. Onuma, K.. Nakajima, T. Aoyama, M. Sumiya, T. Chikyow, and A. Uedono:

      Reduction of point defect density in cubic GaN epilayers on (001) GaAs substrates using AlxGa1-xN/GaN superlattice underlayers,

       Journal of Crystal Growth 272 (2004) pp. 481-488.

 

18. M. Sugiyama, T. Nosaka, T. Suzuki, T. Koida, K. Nakajima, T. Aoyama, M. Sumiya, T. Chikyow, and S. F. Chichibu:

      Reduced nonradiative defect density in cubic GaN epilayers with AlGaN/GaN superlattice underlayers grown on (001) GaAs substrates by metalorganic vapor phase epitaxy,

       Japanese Journal of Applied Physics Part, 43 (2004) pp. 958-965.

 

17. M. Sugiyama, T. Nosaka, T. Onuma, K. Nakajima, P. Ahmet, T. Aoyama, T. Chikyow, and S. F. Chichibu:

      Critical roles of decomposition-shielding layer deposited at low-temperature governing the structural and photoluminescence properties of cubic GaN epilayers grown on (001) GaAs by metalorganic vapor phase Eeitaxy,

       Japanese Journal of Applied Physics, Part 1, 43 (2004) pp. 106-110.

 

16. M. Sugiyama, T. Nosaka, K. Nakajima, P. Ahmet, T. Aoyama, T. Chikyow, and SF. Chichibu:

      Effects of deposition parameters of low-temperature GaN buffer layer on the structural and optical properties of cubic GaN epilayers on GaAs (001) substrates grown by MOVPE,

      Physica Status Solidi (c) 0 (2003) 2099.

 

15. M. Sugiyama, R. Nakai, H. Nakanishi, and SF.Chichibu:

      Interface Fermi level pinning in a Cu/p-CuGaS2 Schottky diode,

      Journal of Physics and Chemistry of Solids 64 (2003) pp.1787-1790.

 

14. SF. Chichibu, Y. Harada, M. Sugiyama, and H. Nakanishi:

      Metalorganic vapor phase epitaxy of Cu(AlxGa1-x)(SySe1-y)2 chalcopyrite semiconductors and their band offsets,

      Journal of Physics and Chemistry of Solids 64 (2003) pp.1481-1489.

 

13. M. Sugiyama, R. Nakai, H. Nakanishi, and S. F. Chichibu:

     Fermi level pinning at the metal / p-type CuGaS2 interfaces,

       Journal of Applied Physics 92 (2002) pp.7317-7319.

 

12. S. F. Chichibu, M. Sugiyama, M. Obasami, A. Hayakawa, T. Mizutani, H. Nakanishi, T. Negami, and T. Wada:

      Use of diethylselenide as a less-hazardous source for preparation of CuInSe2 photo-absorbers by selenization of metal precursors,

       Journal of Crystal Growth 243 (2002), pp 404-409.

 

11. S. F. Chichibu, M. Sugiyama, T. Onuma, T. Kitamura, H. Nakanishi, T. Kuroda, A. Tackeuchi, T. Sota, Y. Ishida, and H. Okumura:

      Localized exciton dynamics in strained cubic In0.1Ga0.9N/GaN multiple quantum wells,

       Applied Physics Letters 79 (2001) pp.4319-4322.

 

10. S. F. Chichibu, M. Sugiyama, T. Kuroda, A. Tackeuchi, T. Kitamura, H. Nakanishi, T. Sota, S. P. DenBaars, S. Nakamura, Y. Ishida, and H. Okumura:

      Band gap bowing and exciton localization in strained cubic InxGa1-xN films grown on 3C-SiC(001) by rf molecular-beam epitaxy,

       Applied Physics Letters 79 (2001) pp.3600-3602.

 

9.     K. Yoshino, M. Sugiyama, D. Maruoka, S. F. Chichibu, H. Komaki, K. Umeda, and T. Ikari:

      Photoluminescence spectra of CuGaSe2 crystals,

       Physica B 302-303 (2001) pp.357-363.

 

8.   K. Yoshino N. Mitani M. Sugiyama, S. F. Chichibu, H. Komaki, and T. Ikari:

Optical and electrical properties of AgIn(SSe)2 crystals,

       Physica B 302-303 (2001) pp.349-356.

 

7.   S. F. Chichibu, T. Auhata, M. Sugiyama, T. Kitamura, Y. Ishida, H. Okumura, H. Nakanishi, T. Sota, and T. Mukai:

      Optical and structural studies in InGaN quantum well structure laser diodes,

       Journal of Vacuum Science & Technology B 19 (2001) pp.2177-2183.

 

6.   M. Sugiyama, H. Nakanishi, and SF. Chichibu:

      Experimental determination of valence band discontinuities at Cu(Al,Ga)(S,Se)2 / GaAs(001) heterointerfaces using ultraviolet photoemission spectroscopy,

       Japanese Journal of Applied Physics 40 (2001) pp.L428 - L430.

 

5.   S. F. Chichibu, A. Setoguchi, T. Azuhata, J. Mullhauser, M. Sugiyama, T. Mizutani, T. Deguchi, H. Nakanishi, T. Sota, O. Brandt, K. H. Ploog, T. Mukai, and S. Nakamura:

      Effective localization of quantum well excitons in InGaN quantum well structures with high InN mole fraction,

       Physica Status Solidi (a) 180 (2000) pp.321-325.

 

4.     M. Sugiyama, N. Mitani, K. Yoshino, T. Ikari, H. Nakanishi, and S. Chichibu:

Optical properties of AgIn(SXSe1-X)2,

       Japanese Journal of Applied Physics, suppl. 39 (2000) pp.96-97.

 

3.   K. Yoshino, N. Mitani, M. Sugiyama, S. Chichibu, H. Nakanishi, and T. Ikari:

      Crystal growth of high purity AgIn(SXSe1-X)2 single crystals,

       Japanese Journal of Applied Physics, suppl. 39 (2000) pp.50 -51.

 

2.     S. F. Chichibu, K. Wada, J. Mullhauser, O. Brandt, K. H. Ploog, T. Mizutani, A. Setoguchi, R. Nakai, M. Sugiyama, H. Nakanishi, K. Torii, T. Deguchi, T. Sota, and S. Nakamura:

      Evidence of localization effects in InGaN single quantum well ultraviolet light emitting diodes,

       Applied Physics Letters 76 (2000) pp.1671-1673.

 

1.   T. Deguchi, K. Torii, K. Shimada, T. Sota, R. Matsuo, M. Sugiyama, A. Setoguchi, S. Chichibu, and S. Nakamura:

      Optical properties of an InGaN active layer in ultraviolet light emitting diode,

       Japanese Journal of Applied Physics 38 (1999) pp.L975-L977.

 

 

 

 

 

2.[学会発表(レフェリー付き国際会議)]

 

190. Keito Okubo and Mutsumi Sugiyama:

      Cesium-induced Surface Modification on CIGS Absorber Layer and the Radiation Hardness on Device”,

       The 2024 Spring Meeting of the European Materials Research Society (E-MRS), Symposium K: Synthesis, processing and characterization of nanoscale multi functional oxide films, Strasburg Convention Centor, France, May 27-31 (2024), K01-X (poster).

 

189. Kana Ueda and Mutsumi Sugiyama:

      Investigation of monolithic photovoltaic-photoelectrochemical-integrated Cu(In,Ga)Se2-related co-planar device for hydrogen generation”,

       The 2024 Spring Meeting of the European Materials Research Society (E-MRS), Symposium O: Future photovoltaics based on earth abundant materials, Strasburg Convention Centor, France, May 27-31 (2024), O01-X (poster).

 

188. Kana Ueda and Mutsumi Sugiyama:

      Effect of modulating the valence band maximum grading around the surface of Cu(In,Ga)Se2 for hydrogen generation”,

       The 2024 Spring Meeting of the European Materials Research Society (E-MRS), Symposium A: Advanced thin films for energy and sustainable applications, Strasburg Convention Centor, France, May 27-31 (2024), A01-X (poster).

 

 

187. Mutsumi Sugiyama:

      Fabrication of visible-light-transparent devices using NiO thin films”,

      TACT2023 International Thin Films Conference, National Taipei University of Technology, Taipei, Taiwan, Nov.12–15, (2023), A-I-66 (invited oral).

 

186. Seira Yamaguchi, Atsushi Sato, Kaori Ajiro, Miyuki Shiokawa, Yuya Hashimoto, Takuto Maeda, Mutsumi Sugiyama, Takeshi Gotanda, Kazuhiro Marumoto:

       “Surface-Passivation-Improvement Mechanism in Perovskite Solar Cells by the Surface Modification of NiOx Hole-Selective Contacts with 2PACz SAMs”,

       2023 International Conference on Solid State Devices and Materials (SSDM2023), 06: Photovoltaics / Energy Harvesting / Batteryrelated Technology, Nagoya Congress Center, Japan, September 5-8 (2023), C-2-02 (oral).

 

185. Ayaka Kanai, Taichi Tosuke, Mutsumi Sugiyama, Hideaki Araki, and Kunihiko Tanaka:

      Current status of earth-abundant Cu2SnS3-based materials for next-generation solar cells”,

      The 30th International Workshop on Acive-Matrix Flatpanel Dispplays and Devices, Session 1 : The Frontiers of PV Technology, 1-1, Ryukoku University Avanti Kyoto Hall Kyoto, Japan, July 4-7 (2023), 1-1 (invited oral).

 

184. Mutsumi Sugiyama, Ayaka Kanai, and Kunihiko Tanaka:

      Influence of Ge Inclusion on Surface Morphologies of Cu2(Sn1-xGex)S3 Films Grown by Sulfurization of Cu/Sn-S Precursors,

       Materials Research Society, 2022 Fall Meeting, Symposium EQ04: Emerging Chalcogenide Electronic MaterialsTheory to Applications, Boston, MA, USA, November 28-December 2 (2022) EQ04.11.12 (poster).

 

183. Mutsumi Sugiyama, Ayaka Kanai, and Keina Kusatsu:

      Influence of S and Cd Atom on Photoluminescence in Tin Sulfide Films,

       Materials Research Society, 2022 Fall Meeting, Symposium EQ04: Emerging Chalcogenide Electronic MaterialsTheory to Applications, Boston, MA, USA, November 28-December 2 (2022) EQ04.11.11 (poster).

 

182. Kana Ueda, Daiki Kanamori, and Mutsumi Sugiyama:

      Material Design of Monolithic Water-Splitting Device Using Chalcogenide Semiconductors,

       Materials Research Society, 2022 Fall Meeting, Symposium EQ04: Emerging Chalcogenide Electronic MaterialsTheory to Applications, Boston, MA, USA, November 28-December 2 (2022) EQ04.11.03 (poster).

 

181. Ayaka Kanai, Ryoma Hata, Mutsumi Sugiyama, Kunihiko Tanaka:

       Influence of Ge/(Ge+Sn) ratio on morphology and structure properties of Cu2(Sn1-xGex)S3 film,

       33rd International Photovoltaic Science and Engineering Conference (PVSEC-33), Nagoya Congress Center, Nogoya, Japan,

       WeP-32-13, November 13-17 (2022), (poster).

 

180. Ryoma Hata, Ayaka Kanai, Mutsumi Sugiyama, Kunihiko Tanaka:

       Investigation of basic physical properties in Cu2Sn1-xGexS3 by observation of photoluminescence,

       33rd International Photovoltaic Science and Engineering Conference (PVSEC-33), Nagoya Congress Center, Nogoya, Japan,

       TuP-32-18, November 13-17 (2022), (poster).

 

179. Kana Ueda, Mutsumi Sugiyama:

       Fabrication of photovoltaic-photoelectrochemical-interconnected water splitting Cu(In,Ga)Se2 device,

       33rd International Photovoltaic Science and Engineering Conference (PVSEC-33), Nagoya Congress Center, Nogoya, Japan,

       TuP-21-09, November 13-17 (2022), (poster).

 

178. Ishwor Khatri, Pedro Santos, Pedro Anacleto, Deepanjan Sharma, Mohamed Belmoubarik, Nicoleta Nicoara, Mutsumi Sugiyama, Sascha Sadewasser,:

      Selenium-free Annealing of Cesium Fluoride on CIGS Thin Film Solar Cells,

       The 8th World Conference on Photovoltaic Energy Conversion (WCPEC), Topic 2: Evolving and Emerging Technologies: Tandems; Thin Film absorbers; III-V; New Materials and Concepts; Advanced Modelling/2.3 CI(G)S, CdTe and Related Thin Films; Organic and Dye-Sensitised Devicesm, Milano Convention Centre in Milan, Italy.

       2DO.6.4, September 26-30 (2022), (oral).

 

177. Mutsumi Sugiyama, Ayaka Kanai, Naruhide Kato,:

      Current status of earth abundant materials for next-generation solar cells,

       2021 Materials Research Society - Taiwan International Conference (2021 MRSTIC), B1. Solar Cells (Organic Solar Cells, Inorganic Solar Cells, Perovskite Solar Cells), Taipei, Taiwan, B1-0326, Online, November 13-17 (2021) (invited-oral).

 

176. Ishwor Khatri, Mutsumi Sugiyama, Sascha Sadawasser:

      Alkali-Metal Treatment for High-Efficiency CIGS Solar Cells,

       2021 Materials Research Society - Taiwan International Conference (2021 MRSTIC), B1. Solar Cells (Organic Solar Cells, Inorganic Solar Cells, Perovskite Solar Cells), Taipei, Taiwan, B1-0429, Online, November 13-17 (2021) (invited-oral).

 

175. S. Imura, K. Mineo, T. Arai, K. Miyakawa, S. Watabe, M. Kubota, S. Aihara, K. Nishimoto, M. Sugiyama, and M. Nanba:

      Stacked Image Sensor with Avalanche Multiplication in a Surface-Enhanced Crystalline Selenium-Based Photoconversion Layer,

       The IEEE 44th International Semiconductor Conference (CAS), Microsensors & Devices, A79-C-9081, Online, October 6-8 (2021) (poster).

 

174. Tzu-Ying Lin, Takahiko Yashiro, Ishwor Khatri, Ayaka Kanai, and Mutsumi Sugiyama:

      Cesium-induced Surface Modification on CIGS Absorber Layer and the Radiation Hardness on Device,

       The 2021 Spring Meeting of the European Materials Research Society (E-MRS), Symposium A: Thin film chalcogenide photovoltaic materials, A-VII-02, Online, May 25-29 (2021) (oral).

 

173. Ayaka Kanai and Mutsumi Sugiyama:

      Effects of defects and diffused sodium on photoluminescence properties of Cu2SnS3 thin films,

       The 2021 Spring Meeting of the European Materials Research Society (E-MRS), Symposium A: Thin film chalcogenide photovoltaic materials, A-PII-36, Online, May 25-29 (2021) (poster).

 

172. Naruhide Kato, Mutsumi Sugiyama:

Degradation phenomena of NiO/ZnO visible-light-transparent solar cells under space environment,

       PVSEC-30 & GPVC 2020, Jeju, Republic of Korea, T3-03-OP-3, Nov. 9-13 (2020) (oral).

 

171. Ayaka Kanai, Mutsumi Sugiyama:

Photoluminescence Properties of Cu2SnS3 Thin-film Solar Cells Deposited on Cu/Sn Ratio,

       PVSEC-30 & GPVC 2020, Jeju, Republic of Korea, PP-T2-027, Nov. 9-13 (2020) (poster).

 

170. Joonam Kim, Kazuki Takahashi, Takato Takaesu, Takenobu Funatsu and Mutsumi Sugiyama:

Characterization of Vertical Aligned MoS2 thin film for Hydrogen Evolution catalyst,

      The 9th Joint Conference on Renewable Energy and Nanotechnology (JCREN 2020), JCREN-75, Khon Kaen University, Khon Kaen, Thailand, Oct.28-29 (2020) (oral).

 

169. Ishwor Khatri, Tzu-Ying Lin, Mutsumi Sugiyama, Tokio Nakada:

Cesium-Related CompoundAn Emerging Chalcogenide Material and Its Influence on CIGS Thin-Film Solar Cells,

Materials Research Society, 2019 Fall Meeting, Symposium EL04: Emerging Chalcogenide Electronic MaterialsFrom Theory to Applications, Boston, MA, USA, Dec.1-06 (2019) EL04.13.06 (poster).

 

168. Ayaka Kanai, Kuruto Toda, Ryota Ohashi, Kanata Watanabe, Shogo Otsuka, Mutsumi Sugiyama, Hideaki Araki:

Fabrication of Cu2GeS3 thin-films by co-evaporation and annealing for solar cells,

The 7th International Symposium on Organic and Inorganic Electronic Materials and Related Nanotechnologies (EM-NANO) 2019, P3-40, Shinshu University, Nagano, Japan, June 19-22 (2019)(poster).

 

167. Ishwor Khatri, Lin Tzu-Ying, Tokio Nakada, Mutsumi Sugiyama:

Self-Maintain CIGS Solar Cells for Space Application,

       32nd International Symposium on Space Technology and Science (ISTS), 2019-p-16, Aossa, Fukui, Japan, June 15-21 (2019) (oral).

 

166. M. Sugiyama, T. Tosuke, T. Takaesu, T. Funatsu:

      Investigation of the reaction mechanism during sulfurization growth of SnS thin films using Sn-S precursors,

       The 2019 Spring Meeting of the European Materials Research Society (E-MRS), Symposium E: Earth-abundant next generation materials for solar energy III, E10.3, Nice France, May 27-31 (2019) (oral).

 

165. T. Tosuke, T.Funatsu, T. Takaesu, and M. Sugiyama:

      Influence of defects of SnS layers around n-type buffer/p-type SnS interface,

       The 2019 Spring Meeting of the European Materials Research Society (E-MRS), Symposium E: Earth-abundant next generation materials for solar energy III, E20.22, Nice France, May 27-31 (2019) (poster).

 

164. J. Rosa, P.J. Soininen, J. Deuermeier, M. Bosund, Z. Zhu, E. Fortunato, R. Martins, M. Sugiyama and S. Merdes:

      Structural and spectroscopic properties of Eu-doped Y2O2S thin films prepared by atomic layer deposition,

       The 2019 Spring Meeting of the European Materials Research Society (E-MRS), Symposium N: Nano-engineered Coatings and Thin Films: from Design to Applications, N.PII.15, Nice France, May 27-31 (2019) (poster).

 

163.        J. Matsuura, I. Khatri, M. Sugiyama, T. Nakada:

     Combined effects of heat-light soaking and subsequent heating on NaF-treated CIGS thin film solar cells,

      21st International Conference on Ternary and Multinary Compounds (ICTMC-21), Boulder, Colorado, USA, Sep.9-13 (2018) (poster).

 

162.        Y. Ando, I. Khatri, M. Sugiyama, and T. Nakada:

     Epitaxial CIGS thin films on Mo back contact for solar cells,

      21st International Conference on Ternary and Multinary Compounds (ICTMC-21), Boulder, Colorado, USA, Sep.9-13 (2018) (poster).

 

161. R. Tanuma, H. Okada, T. Ejiri, and M. Sugiyama:

     Effect of Hall mobility of SnO2 thin film for sensitivity of visible-light-transparency CO2 sensor,

      21st International Conference on Ternary and Multinary Compounds (ICTMC-21), Boulder, Colorado, USA, Sep.9-13 (2018) (poster).

 

160. T. Tosuke, T. Takaesu, T.Funatsu, and M. Sugiyama:

     Influence of defect of SnS related chalcogenide solar cell by Sn-S sputtering precursor,

      21st International Conference on Ternary and Multinary Compounds (ICTMC-21), Boulder, Colorado, USA, Sep.9-13 (2018) (poster).

 

159. T. Tosuke and M. Sugiyama:

     Sulfurization growth of cubic SnS thin films for earth-abundant solar cells,

      21st International Conference on Ternary and Multinary Compounds (ICTMC-21), Boulder, Colorado, USA, Sep.9-13 (2018) (poster).

 

158. M. Simanullang, N. Kawakami, W. Zehua, R. Tanuma, Y. Ohteki, T. Yoshida, and M. Sugiyama:

     Growth of Non-Polar GaN Thin Films on Glass Substrates by Conventional RF Sputtering Using a High Quality Polycrystalline GaN Target,

      Materials Research Society, 2017 Fall Meeting, EM04: Wide- and Ultra-Wide-Bandgap Materials and Devices, Boston, MA, USA, Nov.27-Dec.1 (2017) EM04.07.02 (oral).

 

157. W. Zehua, H. Nakai, M. Sugiyama, and S. F. Chichibu:

     UV light absorbing and emitting diodes consisting of a p-type NiO film deposited on an n-type GaN homoepitaxial epilayer,

      Materials Research Society, 2017 Fall Meeting, Symposium EM04: Wide- and Ultra-Wide-Bandgap Materials and Devices, Boston, MA, USA, Nov.27-Dec.1 (2017) EM04.06.07 (oral).

 

156. R. Tanuma, H. Haga, Y. Ohteki, and M. Sugiyama:

     Fabrication of NiO-related invisible solar cells supplying power for integrated invisible gas sensors using NiO and SnO2,

      Materials Research Society, 2017 Fall Meeting, Symposium ES03: Earth Abundant Metal Oxides, Sulfides and Selenides for Energy Systems and Devices, Boston, MA, USA, Nov.27-Dec.1 (2017) ES03.06.34 (poster).

 

155. T. Tousuke and M. Sugiyama:

     Synthesis of cubic-phase SnS thin films by simple sulfurization for earth-abundant solar cells,

      Materials Research Society, 2017 Fall Meeting, Symposium ES03: Earth Abundant Metal Oxides, Sulfides and Selenides for Energy Systems and Devices, Boston, MA, USA, Nov.27-Dec.1 (2017) ES03.03.02 (poster).

 

154. Junpei Matsuura, Kosuke Shudo, Ishwor Khatri, Mutsumi Sugiyama, Tokio Nakada:

     Enhancement of open-circuit-voltage by heat-light soaking for NaF-based alkali treated CIGS solar cells,

      The 27th International Photovoltaic Science and Engineering Conference (PVSEC-27), Lake Biwa Otsu Prince Hotel, Shiga, Japan, Oct. 12-17 (2017) 2ThPo10341 (poster).

 

153. Yuta Ando, Takeru Yamagami, Ishwor Khatri, Mutsumi Sugiyama, Tokio Nakada:

     Epitaxial CIGS thin films on Mo back contact for solar cells,

      The 27th International Photovoltaic Science and Engineering Conference (PVSEC-27), Lake Biwa Otsu Prince Hotel, Shiga, Japan, Oct. 12-17 (2017) 2ThPo10376 (postr).

 

152. Ishwor Khatri, Kosuke Shudo, Junpei Matsuura, Mutsumi Sugiyama, Tokio Nakada:

     Comparative study of heat light soaking on MF (M = K, Cs) treated CIGS solar cells with CdS buffer layer,

      The 27th International Photovoltaic Science and Engineering Conference (PVSEC-27), Lake Biwa Otsu Prince Hotel, Shiga, Japan, Oct. 12-17 (2017) 2ThO.4.6 (oral).

 

151. Tzu-Ying Lin, Ishwor Khatri, Kosuke Shudo, Wei-Chih Huang, Mutsumi Sugiyama, Chih-Huang Lai, Tokio Nakada:

     Effect of Cesium Fluoride post-deposition treatment on thin film Cu(In,Ga)Se2 solar cells: self-adjustment and interfacial engineering at CIGS/CdS interface,

      The 27th International Photovoltaic Science and Engineering Conference (PVSEC-27), Lake Biwa Otsu Prince Hotel, Shiga, Japan, Oct. 12-17 (2017) 2TuO.6.4 (oral).

 

150.        Takeru Yamagami, Yuta Ando, Ishwor khatri, Mutsumi Sugiyama, Tokio Nakada:

     Growth and properties of epitaxial Cu(In,Ga)Se2 thin films deposited by three-stage process for solar cells,

      IEEE, 44th Photovoltaic Specialists Conference (PVSC-44), Marriott Wardman Park Hotel, Washington D.C., USA, Jun.25-30 (2017) Area2 (poster).

 

149.        Mutsumi Sugiyama, Satoru Aihara, Yosuke Shimamune, and Hironori Katagiri:

     Clarification of proton- and electron-irradiated degradation mechanism of Cu2ZnSnS4 solar cells,

      Materials Research Society, 2017 Spring Meeting, Symposium ES14Thin-Film Chalcogenide Semiconductor Photovoltaics, Phoenix AZ, USA, Apr.17-21 (2017) ES14.9.21 (poster).

 

148. Ramakrishna K.T. Reddy, Mutsumi Sugiyama:

     Earth abundant and environmentally acceptable SnS-based thin film heterojunctions for solar cell applicatione,

      International Conference on Smart Materials and Applications, Bhubaneswar, India, Dec. 15 - 17 (2016) (invited-oral).

 

147. Ramakrishna K.T. Reddy, Mutsumi Sugiyama:

     Earth abundant and environmentally benign SnS-based polycrystalline thin film solar cells,

      International Scientific Conference on "Actual Problems in Solid State Physics", Minsk, Belarus, Nov. 22 25 (2016) (invited-oral).

 

146. Ishwor Khatri, Mutsumi Sugiyama, Tokio Nakada:

     Effects of rinsing solution on KF-treated CIGS thin film solar cells,

      The 26th International Photovoltaic Science and Engineering Conference (PVSEC-26), Marina Bay Sands Sands Expo and Convention Centre, Singapore, Oct. 24-28 (2016) 3.2.1c (oral).

 

145. Kosuke Shudo, Junpei Matsuura, Ishwor Khatri, Mutsumi Sugiyama, Tokio Nakada:

     Effect of heat-light soaking on KF-treated CIGS thin film solar cells,

      The 26th International Photovoltaic Science and Engineering Conference (PVSEC-26), Marina Bay Sands Sands Expo and Convention Centre, Singapore, Oct. 24-28 (2016) 3.2.6c (oral).

 

144. Hiroshi Nakai, Wang Zehua, Ishwor Khatri, Shigefusa F. Chichibu, and Mutsumi Sugiyama:

     Electrical properties of undoped or Li-doped NiO/ZnO heterojunction for visible-light-transparent solar cells,

      The 26th International Photovoltaic Science and Engineering Conference (PVSEC-26), Marina Bay Sands Sands Expo and Convention Centre, Singapore, Oct. 24-28 (2016) 3.4.3a (oral).

 

143. Hiroki Sumi, Keisuke Asaka, Atsushi Okubo, Ishwor Khatri and Mutsumi Sugiyama:

     Band Alignment of n-type Semiconductor/p-type SnS Heterojunction for Earth-Abundant SnS Solar Cells,

      The 26th International Photovoltaic Science and Engineering Conference (PVSEC-26), Marina Bay Sands Sands Expo and Convention Centre, Singapore, Oct. 24-28 (2016) 3_4-0019 (poster).

 

142. Tsubasa Yokoi, Fumiaki Mizuno, Ishwor Khatri and Mutsumi Sugiyama:

     Effect of Alkali-metal post-deposition treatment on SnS thin films and solar cells,

      The 26th International Photovoltaic Science and Engineering Conference (PVSEC-26), Marina Bay Sands Sands Expo and Convention Centre, Singapore, Oct. 24-28 (2016) 3_4-0020 (poster).

 

141.R. Shoji, Y. Kayama, S. F. Chichibu, and M. Sugiyama:

     Phase-transformation studies during simultaneous chalcogenization process using metalorganic sources for CuIn(S,Se)2 thin films,

      20th International Conference on Ternary and Multinary Compounds (ICTMC-20), Halle, Germany, Sep.5-9 (2016) (oral).

 

140.        S. Mikami, T. Yokoi, H. Sumi, S. Aihara, I. Khatri, and M. Sugiyama:

     Effect of alkali metal and sulfur vapor pressure on SnS thin films grown by Sulfurization,

      20th International Conference on Ternary and Multinary Compounds (ICTMC-20), Halle, Germany, Sep.5-9 (2016) (oral).

 

139.        A. Yamada, H. Nakai, K. Moriyama, K. Kumagai, S. F. Chichibu, M. Sugiyama:

     RF Reactive-Sputtering Deposition of Li-Doped NiO Thin Films for Visible-Light-Transparent Solar Cells,

      Materials Research Society, 2015 Fall Meeting, Symposium NN: Thin-Film and Nanostructure Solar Cell Materials and Devices for Next-Generation Photovoltaics, Boston, MA, USA, Nov.29-Dec.4 (2015) No. NN 5. 55 (poster).

 

138.        K. Moriyama, M. Sugiyama:

     Fabrication of Cu2O Thin Films and Solar Cells by RF Reactive Sputtering,

      Materials Research Society, 2015 Fall Meeting, Symposium NN: Thin-Film and Nanostructure Solar Cell Materials and Devices for Next-Generation Photovoltaics, Boston, MA, USA, Nov.29-Dec.4 (2015) No. NN 5. 54 (poster).

 

137.        Mutsumi Sugiyama, Tsubasa Yokoi, Ishwor Khatri:

     Impact of Alkali Metal for SnS Thin Films and Related Solar Cells,

      Materials Research Society, 2015 Fall Meeting, Symposium NN: Thin-Film and Nanostructure Solar Cell Materials and Devices for Next-Generation Photovoltaics, Boston, MA, USA, Nov.29-Dec.4 (2015) No. NN 5. 52 (poster).

 

136.        Satoru Aihara, Tsubasa Yokoi, Ishwor Khatri, Mutsumi Sugiyama:

     Na effect for SnS Thin Films and Related Solar Cells,

      25th International Photovoltaic Science and Engineering Conference (PVSEC-25), II-VI & Chalcogenide Compound based Cells and Materials, Busan, Korea, 2015.11.15-20, C-P-77(Poster).

 

135.        Ishwor Khatri, Hirofumi Fukai, Mutsumi Sugiyama, Tokio Nakada:

     Investigation on the cell performance of potassium fluoride modified CIGS solar cell,

      25th International Photovoltaic Science and Engineering Conference (PVSEC-25), II-VI & Chalcogenide Compound based Cells and Materials, Busan, Korea, 2015.11.15-20, C-O-31(oral).

 

134.        H. Nakai, A. Ogasawara, R. Maeda, D. Kawade, S. F. Chichibu, and M. Sugiyama:

     Fabrication of visible-transparent solar cells composed of NiO/α-Zn-Sn-O heterojunctions,

      2015 Materials Research Society (MRS) Spring Meeting, Symposium Symposium SS: Oxide Thin Films and Nanostructures for Advanced Electrical, Optical and Magnetic Applications, San Francisco, CA, USA, 2015.4.6-10, SS10.46 (poster).

 

133.        T. Yokoi, H. Sakakura, S. Aihara, H. Nagayasu, M. Itagaki, and M. Sugiyama:

     Impact of defects around pn-interface on the electrical properties of SnS solar cells,

      2015 Materials Research Society (MRS) Spring Meeting, Symposium Symposium B: Thin Film Compound Semiconductor Photovoltaics, San Francisco, CA, USA, 2015.4.6-10, B9.21(poster).

 

132.        M. Sugiyama, S. Aihara, H. Sakakura, and H. Katagiri:

     Degradation properties of electron irradiated CZTS solar cells,

      2015 Materials Research Society (MRS) Spring Meeting, Symposium Symposium B: Thin Film Compound Semiconductor Photovoltaics, San Francisco, CA, USA, 2015.4.6-10, B9.18 (poster).

 

131.        S. Mikami, H. Sumi, T.Yokoi, H. Nagayasu, S. Aihara, K. Hisatomi, and M. Sugiyama:

     Sulfurization growth of SnS thin films using S-premixed precursors for Earth-abundant solar cells,

      2015 Materials Research Society (MRS) Spring Meeting, Symposium Symposium B: Thin Film Compound Semiconductor Photovoltaics, San Francisco, CA, USA, 2015.4.6-10, B3.21(poster).

 

130.        H. Sumi, S. Sato, G. Shi and M. Sugiyama:

     Band alignment of n-type semiconductor/p-type Cu2SnS3 heterojunction for high-performance Cu2SnS3-based solar cells,

      2015 Materials Research Society (MRS) Spring Meeting, Symposium Symposium B: Thin Film Compound Semiconductor Photovoltaics, San Francisco, CA, USA, 2015.4.6-10, B3.08 (poster).

 

129.        H. Sato, T. Seishu, M. Sugiyama, T. Nakada:

     Preparation of High Electron Mobility ITiO Thin films for Front contact of CIGS Solar Cells,

The 24th Annual Meeting of MRS-J with The 1st E-MRS/MRS-J Bilateral Symposia, XA : Materials Frontier for Transparent Advanced Electronics,

Yokohama Port Opening Plaza, Yokohama, Japan, Dec. 10-12 (2014), XA-P11-028 (poster).

 

128.        M. Teramoto, S. Seishu, H. Fukai, Z. Jehl, M. Sugiyama, T. Nakada:

     High Temperature Growth of Sputter-Deposited Mo thin Films for CIGS Solar Cells,

      Materials Research Society, 2014 Fall Meeting, Symposium V: Sustainable Solar-Energy Conversion Using Earth-Abundant Materials,

      Boston, MA, USA, Nov.30-Dec.5 (2014) No. V14.27 (poster).

 

127.        H. Sakakura, M. Itagaki, M. Sugiyama:

     Application of Electrochemical Impedance Spectroscopy for Improving the Efficiency of Earth-abundant-material Solar Cells Quasi-lifetime of recombination process around pn-interface of thin-film solar cells―”,

      Materials Research Society, 2014 Fall Meeting, Symposium V: Sustainable Solar-Energy Conversion Using Earth-Abundant Materials,

      Boston, MA, USA, Nov.30-Dec.5 (2014) No. V5.42 (poster).

 

126.        M. Sugiyama, D. Kawade, H. Nakai, A. Ogasawara, R. Maeda, R. Sakai, H. Sakakura, S. F. Chichibu:

     Fabrication of visible-light-transparent solar cells using wide bandgap oxide semiconductors by RF sputtering method,

      Materials Research Society, 2014 Fall Meeting, Symposium V: Sustainable Solar-Energy Conversion Using Earth-Abundant Materials,

      Boston, MA, USA, Nov.30-Dec.5 (2014) No. V5.50 (poster).

 

125.        M. Sugiyama, S. Aihara, K.T. Ramakrishna Reddy, M. Vasudeva Reddy, S. Mikami:

     Photoluminescence Properties of SnS Thin Films and Related Solar Cells,

      Materials Research Society, 2014 Fall Meeting, Symposium V: Sustainable Solar-Energy Conversion Using Earth-Abundant Materials,

      Boston, MA, USA, Nov.30-Dec.5 (2014) No. V14.31 (poster).

 

124.        R. Sakai, D. Kawade, Y. Watanabe, S. F. Chichibu, M. Sugiyama:

     Fabrication of NiO-based Transparent Thin-Film Transistor by Reactive RF Sputtering method,

      Materials Research Society, 2014 Fall Meeting, Symposium O: Oxide Semiconductors,

      Boston, MA, USA, Nov.30-Dec.5 (2014) No. O9.37 (poster).

 

123.        K.T. R. Reddy, M. V. Reddy, and M. Sugiyama:

     Effect of Sulfurization Time on the Properties of Sulfurized SnS Films,

      19th International Conference on Ternary and Multinary Compounds (ICTMC-19), Niigata, Japan, 2014. 09. 01-05, P4-076 (poster).

 

122.        S. Sato and M. Sugiyama:

     Growth of Cu2SnS3 Thin Films by Sulfurization for Earth-Abundant Solar Cells,

      19th International Conference on Ternary and Multinary Compounds (ICTMC-19), Niigata, Japan, 2014. 09. 01-05, P4-076 (poster).

 

121.        K.T. Ramakrishna Reddy, K. Ramya, T. Shimizu, and M. Sugiyama:

Studies on In2S3/SnS Thin Film Heterojunction Solar Cell,

      19th International Conference on Ternary and Multinary Compounds (ICTMC-19), Niigata, Japan, 2014. 09. 01-05, P4-067 (poster).

 

 

120.        D. Kawade, K. Moriyama, F. Nakamura, S. F. Chichibu, and M. Sugiyama:

     Fabrication of visible-light transparent solar cells composed of NiO/NixZn1-xO/ZnO heterostructures,

      19th International Conference on Ternary and Multinary Compounds (ICTMC-19), Niigata, Japan, 2014. 09. 01-05, Thu-O-12B (oral).

     

119.        S.W. Chang and M. Sugiyama:

     Growth of amorphous ZnSnO buffer layers deposited via RF magnetron sputtering for CIGS solar cells,

      19th International Conference on Ternary and Multinary Compounds (ICTMC-19), Niigata, Japan, 2014. 09. 01-05, Thu-O-7B (oral).

 

118.        M. Sugiyama, H. Nagayasu, T. Tsugawa, T. Hiramatsu, K. Hisatomi, S. Aihara:

     Sulfurization growth mechanism and defect properties of SnS thin films,

      European Materials Research Society (E-MRS), 2014 Spring Meeting, Symposium A Thin film chalcogenide photovoltaic materials, Lille, France, 2014.5.27-29, A.P4-18 (poster).

 

117.        H. Sakakura, Y. Kondo, S. Aihara, M. Itagaki, M. Sugiyama:

     Investigation of defect-related recombination process around pn-interface of CIGS solar cells by impedance spectroscopy,

      European Materials Research Society (E-MRS), 2014 Spring Meeting, Symposium A Thin film chalcogenide photovoltaic materials, Lille, France, 2014.5.27-29, A.P4-15 (poster).

 

116.        M. Sugiyama:

     Material Design for Novel-Concept-Based Solar Cells --Sulfurization or Oxidization of Cheap Metals,

      2014 Materials Research Society (MRS) Spring Meeting, Symposium E: Earth-Abundant Inorganic Solar-Energy Conversion, San Francisco, CA, USA, 2014.4.21-25, E1.01(invited).

 

115.        S. Aihara, H. Nagayasu, K. Hisatomi, H. Sakakura, T. Hiramatsu, M. Itagaki, and M. Sugiyama:

     Impact of Carrier-Transfer Time-Constant (quasi-lifetime) on The Electrical Properties of SnS Solar Cells Measured by Electrochemical Impedance Spectroscopy,

      2014 Materials Research Society (MRS) Spring Meeting, Symposium E: Earth-Abundant Inorganic Solar-Energy Conversion, San Francisco, CA, USA, 2014.4.21-25, E15.15(poster).

 

114.        K. Moriyama, D. Kawade, F. Nakamura, S. F. Chichibu, and M. Sugiyama:

     Fabrication of Visible-Light Transparent Solar Cells Composed of NiO/NixZn1-xO/ZnO Heterojunctions,

      2014 Materials Research Society (MRS) Spring Meeting, Symposium E: Earth-Abundant Inorganic Solar-Energy Conversion, San Francisco, CA, USA, 2014.4.21-25, E15.17(poster).

 

113.        D. Kawade, S. F. Chichibu and M. Sugiyama:

     Band Offset Measurement on NiO-based Visible-light-transparent Solar Cells Using Photoemission Yield Spectroscopy,

      Materials Research Society, 2013 Fall Meeting, Symposium R: Oxide Semiconductors,

      Boston, MA, USA, Dec.1-6 (2013) No. R15.24 (poster).

 

112.        M. Sugiyama, S.W. Chang, and M. Itagaki:

     Sputtering deposition of amorphous Zn-Sn-O buffer layer for CIGS solar cells and investigation of sputtering damage around pn-interface by impedance spectroscopy,

      Materials Research Society, 2013 Fall Meeting, Symposium W: Next-Generation Inorganic Thin-Film Photovoltaics,

      Boston, MA, USA, Dec.1-6 (2013) No. W8.10 (oral).

 

111.K. Hisatomi, H. Nagayasu, T. Hiramatsu, M. Sugiyama:

     Sulfurization Growth of b-axis-oriented-SnS Thin Films and Fabrication of SnS-related Solar Cells,

      Materials Research Society, 2013 Fall Meeting, Symposium W: Next-Generation Inorganic Thin-Film Photovoltaics,

      Boston, MA, USA, Dec.1-6 (2013) No. W9.23 (poster).

 

110.        S. Sato and M. Sugiyama:

     Investigation of Sulfurization Process of Cu2SnS3 Thin Films for Earth-Abundant Solar Cells,

      Materials Research Society, 2013 Fall Meeting, Symposium W: Next-Generation Inorganic Thin-Film Photovoltaics,

      Boston, MA, USA, Dec.1-6 (2013) No. W9.05 (poster).

 

109.        S. W. Chang, M. Sugiyama, and M. Itagaki:

     Growth of alternative n-type layer for CIGS solar cells by RF sputtering and investigation of sputtering damage around pn-interface by impedance spectroscopy,

     23rd International Photovoltaic Science and Engineering Conference (PVSEC-23), 3-4: Characterization, Taipei, Taiwan, 2013.10.28-11.1, 3-O-7, No. 1172 (oral).

 

108.        S. W. Chang, K. Ishikawa, and M. Sugiyama:

     Growth of amorphous ZnSnO buffer layers by RF sputtering for CIGS solar cells,

      23rd International Photovoltaic Science and Engineering Conference (PVSEC-23), 3-6: CZTS, CdTe, and Related Materials, Taipei, Taiwan, 2013.10.28-11.1, 3-O-1, No. 1171 (oral).

 

107.        M. Sugiyama, K. Hisatomi, H. Nagayasu, T. Hiramatsu:

     Fabrication of b-axis-Orientated SnS Thin Films with a High Mobility by Sulfurization for Use in Solar Cells,

      23rd International Photovoltaic Science and Engineering Conference (PVSEC-23), 3-5: Buffer and Window Layers, Taipei, Taiwan, 2013.10.28-11.1, No. 1173 (poster).

 

106.        S. Sato, Y. Kayama and M. Sugiyama:

     Investigation of Sulfurization Process of Cu2SnS3 Thin Films for Next Generation Solar Cells,

      JSAP-MRS Joint Symposia, Symposium T: Ternary and Multinary Cu-chalcogenide Photovoltaic Materials -CIS, CZTS and Other Compounds-, Kyoto, Japan, 2013.9.16-20, 18p-PM5-23 (poster).

 

105:        M. Sugiyama, M. Hayashi, B. H. Nafisah, C. Yamazaki, Y. Hirose, M. Itagaki:

     Investigation of Defects Properties of CIGS Semiconductor-used Solar Cells by Impedance Spectroscopy,

      9th International Symposium on Electrochemical Impedance Spectroscopy (EIS2013), Okinawa, Japan, 2013.6.16-21, EIS_129 (Keynote: oral).

 

104:        D.Kawade, L. J. Sharon, M. Yoneoka, I. Tsunoda, K. Takakura, M. Itagaki, M. Sugiyama:

      Investigation of Degradation Properties around CdS/CIGS Interfaces of CIGS Solar Cells by Impedance Spectroscopy,

      9th International Symposium on Electrochemical Impedance Spectroscopy (EIS2013), Okinawa, Japan, 2013.6.16-21, S02-34 (poster).

 

103:        T. Seishu, Y. Hirose, T. Yamashita, D. Kawade, M. Itagaki, M. Sugiyama:

      Utilization of Impedance Spectroscopy for Evaluation of Defect Physics of Oxide-semiconductor-related Solar Cells,

      9th International Symposium on Electrochemical Impedance Spectroscopy (EIS2013), Okinawa, Japan, 2013.6.16-21, S02-35 (poster).

 

102:        S. Sato, K. Hisatomi, H. Nagayasu, M. Itagaki, and M. Sugiyama:

      Application of Impedance Spectroscopy to Investigate the Defect Properties around the pn Interface of Thin Film Solar Cell,

      9th International Symposium on Electrochemical Impedance Spectroscopy (EIS2013), Okinawa, Japan, 2013.6.16-21, S02-36 (poster).

 

101:        H. Sakakura, S. Chang, M. Itagaki, M. Sugiyama:

      Investigation of Sputtering Damages around pn Interfaces of CIGS Solar Cells by Impedance Spectroscopy,

      9th International Symposium on Electrochemical Impedance Spectroscopy (EIS2013), Okinawa, Japan, 2013.6.16-21, S02-37 (poster).

 

100: D. Kawade, T. Yamashita, J. Ishida, S. F. Chichibu, and M. Sugiyama:

      Control of carrier concentration for wide-bandgap p-type NiO thin film as a multifunctional window,

      2013 Materials Research Society (MRS) Spring Meeting, Symposium XX: Oxide Thin Films and Heterostructures for Advanced Information and Energy Technologies, San Francisco, CA, USA, 2013.4.1-5, XX3.20 (poster).

 

99. K. Hisatomi, T. Hiramatsu, H. Nagayasu, S. Mori, M. Sugiyama:

      Controlling the Carrier Density with a Sulfur Fraction of Sulfurization Growth for SnS Solar Cells,

     2013 Materials Research Society (MRS) Spring Meeting, Symposium C: Thin-Film Compound Semiconductor Photovoltaics, San Francisco, CA, USA, 2013.4.1-5, C5.43 (poster).

 

98.  H. Sakakura, L. J. Sharon, M. Itagaki, M. Sugiyama:

      Investigation of Defects and Degradation around CdS/CIGS Interfaces of CIGS Solar Cells by Impedance Spectroscopy,

     2013 Materials Research Society (MRS) Spring Meeting, Symposium C: Thin-Film Compound Semiconductor Photovoltaics, San Francisco, CA, USA, 2013.4.1-5, C10.30 (poster).

 

97. S. Sato, Y. Kayama and M. Sugiyama:

      Growth of Cu2SnS3 Photoabsorbing Films by Simple Sulfurization,

     2013 Materials Research Society (MRS) Spring Meeting, Symposium C: Thin-Film Compound Semiconductor Photovoltaics, San Francisco, CA, USA, 2013.4.1-5, C5.42 (poster).

 

96.  M. Sugiyama, R.Shoji, Y. Kayama, S. F. Chichibu:

      Reaction Mechanisms of CuIn(S,Se)2 Thin Film Growth by the Chalcogenization Technique Using Organometallic Sources,

     2013 Materials Research Society (MRS) Spring Meeting, Symposium C: Thin-Film Compound Semiconductor Photovoltaics, San Francisco, CA, USA, 2013.4.1-5, C10.32 (poster).

 

95.  Ryousuke Shouji, Ryuki Shouji, Mutsumi Sugiyama, Takashiro Akitsu:

     Chemical Process of Recovering Cyanide from Preparation of Semiconductors for Solar Cells,

      International Conference on Chemistry and Materials: Prospects & Perspectives-2012 (ICCMPP-2012) Babasaheb Bhimrao Ambedkar University, India, 2012-12-1416 (poster).

 

94.  M. Sugiyama, L. J. Sharon, H. Sakakura, Y. Hirose, I. Tsunoda, K. Takakura:

     Impacts of Proton Irradiation on Optical and Electrical Properties of Cu(In,Ga)Se2 Solar Cells,

      The 10th International Workshop on Radiation Effects on Semiconductor Devices for Space Applications (10th RASEDA)

      Tsukuba, Ibaraki, Japan Dec10-12 (2012) B-2(oral).

 

93.  T. Yamashita, J. Ishida, S. F. Chichibu, and M. Sugiyama:

      Fabrication of visible-light-transparent solar cells using p-type NiO films,

      Materials Research Society, 2012 Fall Meeting, Symposium F:Oxide Thin Films for Renewable Energy Applications,

      Boston, MA, USA, Nov.26-30 (2012) No. F16.02 (oral).

 

92.  M. Sugiyama, L. J. Sharon, H. Sakakura, Y. Hirose, I. Tsunoda, K. Takakura, M. Itagaki:

      Clarification of proton- and electron-irradiated degradation mechanism of Cu(In,Ga)Se2 solar cells using impedance spectroscopy,

      Materials Research Society, 2012 Fall Meeting, Symposium E: Photovoltaic TechnologiesMaterials, Devices, and Systems,

      Boston, MA, USA, Nov.26-30 (2012) E19.46 (poster).

 

91.  R.Shoji, S. F. Chichibu, and M. Sugiyama:

      Simultaneous chalcogenization process using metalorganic source for designing a band discontinuity of CuIn(S,Se)2 solar cells,

      Materials Research Society, 2012 Fall Meeting, Symposium E: Photovoltaic TechnologiesMaterials, Devices, and Systems,

      Boston, MA, USA, Nov.26-30 (2012) E19.64 (poster).

 

90.  M. Sugiyama, Y. Hirose, M. Warasawa, I. Tsunoda, K. Takakura:

      Degradation effects of proton and electron irradiation for Cu(In,Ga)Se2 solar cells,

      18th International Conference on Ternary and Multinary Compounds(ICTMC), Salzburg, Austria, 2012.08.27-31, S04-L04 (oral).

 

89.  M. Sugiyama, M. Hayashi, B. H. Nafisah, Y. Hirose, and M. Itagaki:

     Utilization ofImpedance Spectroscopyfor Investigation of Defect Properties of CIGS Solar Cells,

      18th International Conference on Ternary and Multinary Compounds(ICTMC), Salzburg, Austria, 2012.08.27-31, S08-L03 (oral).

 

88.  Y. Kayama, R. Shoji, S. F. Chichibu, M. Sugiyama:

     Investigation of sulfurization process and phase transformation in In-rich CuInS2 thin films using ditertiarybutylsulfide,

      European Materials Research Society (E-MRS), 2012 Spring Meeting, Session B: Thin Film Chalcogenide Photovoltaic Materials, Strasbourg, France, 2012.5.14-18. B-P1-1(poster).

     

87.  M. Sugiyama, T. Hiramatsu, T. Arai, T. Hirano, T. Shimizu:

      Sulfurization Mechanism and Defect Properties of SnS Films for Solar Cell Application,

      European Materials Research Society (E-MRS), 2012 Spring Meeting, Session B: Thin Film Chalcogenide Photovoltaic Materials, Strasbourg, France, 2012.5.14-18. B-P2-4(poster).

 

86.  M. Sugiyama, M. Hayashi, B. H. Nafisah, Y. Hirose, and M. Itagaki:

     Application of Impedance Spectroscopy to Investigation of Electrical Properties around pn Interface of CIGS Solar Cells,

      European Materials Research Society (E-MRS), 2012 Spring Meeting, Session B: Thin Film Chalcogenide Photovoltaic Materials, Strasbourg, France, 2012.5.14-18. B-O10-1(oral).

 

85.  Y. Hirose, T. Morohoshi, C. Yamazaki, M. Itagaki, M. Sugiyama:

     Impedance spectroscopy of oxide-semiconductor-related solar cells for evaluation pn-interface,

      2011 Materials Research Society (MRS) Fall Meeting, Boston, MA, USA, 2011.11.28-12.02, M3-8 (poster).

 

84.  M. Sugiyama, Y. Hirose, M. Warasawa, I. Tsunoda, S. Kimura, K. Takakura, H. Ohyama:

     Impacts of electron and proton irradiation on the properties of transparent conducting oxide films,

      2011 Materials Research Society (MRS) Fall Meeting, Boston, MA, USA, 2011.11.28-12.02, M12-21 (poster).

 

83.  M. Warasawa, J. Ishida, S. F. Chichibu, and M. Sugiyama:

     Fabrication of a novel solar cell using p-type oxide semiconductors deposited using RF reactive sputtering method,

      2011 Materials Research Society (MRS) Fall Meeting, Boston, MA, USA, 2011.11.28-12.02, M13-28 (poster).

 

82.  K. T. R. Reddy, V. Supriya, M. Sugiyama:

     Substrate Temperature Effect on the Properties of Zn1-xCoxO Films Deposited by Spray Pyrolysis,

      International Conference on Materials for Advanced Technologies (ICMAT2011), SUNTEC Singapore, Singapore, 2011.6.26-7.1, L-PO3-57 (poster).

 

81.  T. Hirano, T. Shimizu, K. Yoshida, and M. Sugiyama:

     Sulfurization Growth of SnS Films abd Fabrication of ZnO/SnS Heterojunction for Solar Cells,

      37th IEEE Photovoltaic Specialists Conference (PVSC-37), Washington State Convention Center, Seattle, Washington., USA, 2011.6.1929, Area2-405 (late news, poster).

 

80.  Y. Matsumoto, M. Warasawa, A. Kaijo, and M. Sugiyama:

     Advantage of using Amorphous IZO Filmsfor the Transparent Conducting OxideLayer in Cu(In,Ga)Se2 Solar Cells,

      37th IEEE Photovoltaic Specialists Conference (PVSC-37), Washington State Convention Center, Seattle, Washington., USA, 2011.6.1929, Area2-799 (poster).

 

79.  M. Sugiyama, C. Fujiwara, R. Shoji, and S. F. Chichibu:

     Sufurization Growth of CuInS2 Thin Films and Solar Cells using Ditertiarybutylsulfide as a Less-hazardous Source,

      37th IEEE Photovoltaic Specialists Conference (PVSC-37), Washington State Convention Center, Seattle, Washington., USA, 2011.6.1929, Area2-156 (poster).

 

78.  K. T. Ramakriahna Reddy, K. Ramya, T. Shimizu, Y. Murata, M. Sugiyama:

     Studies on the Energy Band Discontinuities for SnS/ZnMgO Thin Film Heterojunction,

      European Materials Research Society (E-MRS), 2011 Spring Meeting, Nice, France, 2011.5.9-13, R18-28 (poster).

 

77.  T. Shimizu, Y. Murata, C. Venkataiah, K. T. R. Reddy, and M. Sugiyama:

     Band alignments of n-type semiconductor/SnS heterojunction for high-performance SnS-related solar cells,

      2011 Materials Research Society (MRS) Spring Meeting, San Francisco, CA, USA, 2011.4.25-29, D16.12 (poster).

 

76.  J. Ishida, H. Kudo, Y. Murata, M. Sugiyama, and S. F. Chichibu:

     Fabrication of NiO related solar cells by RF sputtering method,

      2011 Materials Research Society (MRS) Spring Meeting, San Francisco, CA, USA, 2011.4.25-29, D16.15 (poster).

 

75.  R. Shoji, C. Fujiwara, T. Shimizu, T. Sato, M. Sugiyama, and S. F. Chichibu:

     Growth of Cu(In,Al)(S,Se)2 thin films by selenization and sulfurization,

      2011 Materials Research Society (MRS) Spring Meeting, San Francisco, CA, USA, 2011.4.25-29, D15.9 (poster).

 

74.  K. Ishikawa, Y. Kawasaki, S. F. Chichibu, and M. Sugiyama:

     Growth of ZnOSe buffer layers for CIGS solar cells by simple dry and continuous processes,

      2011 Materials Research Society (MRS) Spring Meeting, San Francisco, CA, USA, 2011.4.25-29, D15.10 (poster).

 

73.  M. Sugiyama, M. Warasawa, Y. Matsumoto, T. Hirano, and A. Kaijo:

     Advantages of using amorphous IZO films for window layer in CIGS solar cells,

      2011 Materials Research Society (MRS) Spring Meeting, San Francisco, CA, USA, 2011.4.25-29, D7.4 poster).

 

72.  M. Sugiyama, M. Warasawa, A. Kaijo, C. Yamazaki, Y. Hirose, K. Takakura, H. Ohyama:

     Tolerance of indium zinc oxide films for the TCO layer of Cu(In,Ga)Se2 solar cells,

      2010 Materials Research Society (MRS) Fall Meeting, Boston, MA, USA, 2010.11.29-12.03, MM6-12 (poster).

 

71.  M. Warasawa, A. Kaijo, and M. Sugiyama:

     Advantages of using amorphous indium zinc oxide films for thetransparent conducting oxide layer in Cu(In,Ga)Se2 solar cells,

      2010 Materials Research Society (MRS) Fall Meeting, Boston, MA, USA, 2010.11.29-12.03, MM6-14 (poster).

 

70.  Y. Murata, M. Sugiyama, and S. F. Chichibu:

     Effects of air-annealing on p-type nickel oxide filmsdeposited by the RF reactive sputtering method,

      2010 Materials Research Society (MRS) Fall Meeting, Boston, MA, USA, 2010.11.29-12.03, MM6-13 (poster).

 

69.  M. Sugiyama, T. Yasuniwa, C. Fujiwara, S. F. Chichibu, and S. Kimura:

     Impacts of proton, alpha-ray, and gamma-ray irradiation on the optical and electrical properties of Cu(In,Ga)Se2 thin films and solar cells,

      The 9th International Workchop on Radiation Effects on Semiconductor Devices for Space Applications (RASEDA-9),Takasaki City Gallery, Takasaki, Japan 2010.10.27-29, P-09 (poster).

 

68.  M. Warasawa, Y. Hirose, K. Takakura, S. Kimura, H. Ohyama, and M. Sugiyama:

     Impacts of  electron irradiation on the optical and electrical properties of transparent conducting oxide films for CIGS solar cells,

      The 9th International Workchop on Radiation Effects on Semiconductor Devices for Space Applications (RASEDA-9),Takasaki City Gallery, Takasaki, Japan 2010.10.27-29, P-11Y (poster).

 

67.  Y. Hirose, M. Warasawa, K. Takakura, S. Kimura, H. Ohyama, and M. Sugiyama:

      Optical and electrical properties of electron irradiated Cu(In,Ga)Se2 solar cells,

      The 9th International Workchop on Radiation Effects on Semiconductor Devices for Space Applications (RASEDA-9),Takasaki City Gallery, Takasaki, Japan 2010.10.27-29, P-08Y (poster).

 

66.  L.Rajamohan Reddy, P. Prathap, N. Revathi, T. Sato, M. Sugiyama and K.T.R.Reddy:

     Investigations on Al-doped ZnMnO films deposited by chemical spray,

      17th International Conference on Ternary and Multinary Compounds (ICTMC-17), Azerbaijan National Academy of Sciences, Baku, Azerbaijan 2010.09.27-30, P1-7 (poster).

 

65.  V. Supriya, T. Sato, M. Sugiyama and K.T. R. Reddy:

     Structural and optical properties of cobalt doped sprayed ZnO films,

      17th International Conference on Ternary and Multinary Compounds (ICTMC-17), Azerbaijan National Academy of Sciences, Baku, Azerbaijan 2010.09.27-30, P1-6 (poster).

 

64.  T. Sato, Y. Kawasaki, M. Sugiyama and S. F. Chichibu:

     Fabrication of Cu(In,Ga)Se2 thin films by sputtering and selenization using diethylselenide,

      17th International Conference on Ternary and Multinary Compounds (ICTMC-17), Azerbaijan National Academy of Sciences, Baku, Azerbaijan 2010.09.27-30, P1-13 (poster).

 

63.  C. Fujiwara, Y. Kawasaki, T. Sato, M. Sugiyama and S. F. Chichibu:

      Growth of Cu(In,Al)(Se,S)2 thin films by selenization and sulfurization for a wide bandgap absorber,

      17th International Conference on Ternary and Multinary Compounds (ICTMC-17), Azerbaijan National Academy of Sciences, Baku, Azerbaijan 2010.09.27-30, P1-26 (poster).

 

62.  M. Sugiyama, Y. Hirose, M. Warasawa, K. Takakura, S. Kimura, S. F. Chichibu and H. Ohyama:

      Impacts of electron irradiation on the optical and electrical properties of CIGS thin films and solar cells,

      17th International Conference on Ternary and Multinary Compounds (ICTMC-17), Azerbaijan National Academy of Sciences, Baku, Azerbaijan 2010.09.27-30, P7-17 (poster).

 

61.  P. Babu, N. Revathi, T. Sato, M. Sugiyama and K. T. Ramakrishna Reddy:

     Studies on ZnIn2Se4 nano crystallites synthesized by chemical precipitation,

      17th International Conference on Ternary and Multinary Compounds (ICTMC-17), Azerbaijan National Academy of Sciences, Baku, Azerbaijan 2010.09.27-30, P7-18 (poster).

 

60.  M. Sugiyama, Y. Murata, T. Shimizu, N. Revathi , C. Venkataiah , K. Yoshida, T. Sato, and K. T. R. Reddy:

     Sulfurization growth of SnS thin films and optimization of pn-junction of SnS-related solar cells,

      17th International Conference on Ternary and Multinary Compounds (ICTMC-17), Azerbaijan National Academy of Sciences, Baku, Azerbaijan 2010.09.27-30, P7-21 (poster).

 

59.  V.P. Geethavani, N. Revathi, T. Sato, M. Sugiyama and K.T.Ramakrishna Reddy:

     Preparation and properties of co-evaporated Cu4SnS4 layers,

      17th International Conference on Ternary and Multinary Compounds (ICTMC-17), Azerbaijan National Academy of Sciences, Baku, Azerbaijan 2010.09.27-30, P7-22 (poster).

 

58.  M. Sugiyama, K. T. R. Reddy, N. Revathi and Y. Shimamoto:

Energy Band Discontinuities in SnS/CdS Heterojunction for Solar Cell,

25th European Photovoltaic Solar Energy Conference (25th EU PVSEC), Feria Valencia in Valencia, Spain. 2010.9.6-9. 3BV.2.11 (poster).

 

57.  Y. Kawasaki, T. Sato, C. Fujiwara, S. F. Chichibu, M. Sugiyama:

The use of metalorganic sources for the continuous fabrication of Cd-free CIGS solar cells with a ZnSe buffer layer,

25th European Photovoltaic Solar Energy Conference (25th EU PVSEC), Feria Valencia in Valencia, Spain. 2010.9.6-9. 3BV.2.10 (poster).

 

56.  M. Rajendraprasad Reddy, P. Prathap, M. Sugiyama and K. T. Ramakrishna Reddy:

Influence of Ni-doping on the physical properties of sprayed ZnO films,

      European Materials Research Society (E-MRS), 2010 Spring Meeting, Session F: Wide bandgap cubic semiconductors : from growth to devices, Strassbourg, France, 2010.6.7-11. F-P-47 (poster).

 

55.  V. Supriya, P. Prathap, M. Sugiyama and K. T. Ramakrishna Reddy:

Physical Properties of Zn1-xCoxO films deposited by Spray Pyrolysis,

      European Materials Research Society (E-MRS), 2010 Spring Meeting, Session F: Wide bandgap cubic semiconductors : from growth to devices, Strassbourg, France, 2010.6.7-11. F-P-48 (poster).

 

54. Y. Hirose, K. Takakura, S. Kimura, S. F. Chichibu, H. Ohyama, and M. Sugiyama:

Optical properties of electron irradiated CIGS and ZnO thin films,

      European Materials Research Society (E-MRS), 2010 Spring Meeting, Session M: Thin Film Chalcogenide Photovoltaic Materials, Strassbourg, France, 2010.6.7-11. M-P4-3 (poster).

 

53. M. Sugiyama, K. T. R. Reddy, N. Revathi and Y. Shimamoto:

Band Offset Measurement for SnS-Based Solar Cell Using X-ray Photoemission Spectroscopy,

      European Materials Research Society (E-MRS), 2010 Spring Meeting, Session M: Thin Film Chalcogenide Photovoltaic Materials, Strassbourg, France, 2010.6.7-11. M-O10-4 (oral).

 

52. M. Sugiyama, K. T. R. Reddy, C. Venkataiah and Y. Shimamoto:

Sulfurization Growth of SnS Films for Solar Cell Application,

European Materials Research Society (E-MRS), 2010 Spring Meeting, Session M: Thin Film Chalcogenide Photovoltaic Materials, Strassbourg, France, 2010.6.7-11. M-P1-2 (poster).

 

51.  M. Sugiyama, K. T. Ramakrishna Reddy, N. Revathi and Y. Shimamoto:

Measurement of Band Offsets for SnS/CdS Heterojunction,

National Conference on Mateirals for Energy Storage and Conversion (NCMESC-2010), Dpt. of Phys., Sri Venkateswara University, Tirupati, India, 2010.1.23-24 (invited).

 

K. Wendt, T. Hempel, J. Christen, K-M. Gunther, M. Sugiyama and S. Chichibu:

Vergleichende Charakterisierung von Homo- und Heterojunction- CuIn0,4Ga0,6Se2  Solarzellenstrukturen auf Glassubstrat,

      Deutsche Physikalische Gesellschaft Spring Meeting (DPG-2010), HL: Fachverband Halbleiterphysik-Photovoltaics, University of Regensburg, Germany 2010.03.21-26, HL 4.5 (oral).

 

49.  K. T. Ramakrishna Reddy and M. Sugiyama:

Tin Sulphide - A Novel Photovoltaic Absorber Material,

National Conference on Mateirals for Energy Storage and Conversion (NCMESC-2010), Dpt. of Phys., Sri Venkateswara University, Tirupati, India, 2010.1.23-24 (invited).

 

48.  M. Rajendraprasad Reddy, M. Sugiyama and K. T. Ramakrishna Reddy:

Physical Investigations on ZnO:Ni Films Grown by Spray Pyrolysis,

National Conference on Mateirals for Energy Storage and Conversion (NCMESC-2010), Dpt. of Phys., Sri Venkateswara University, Tirupati, India, 2010.1.23-24 (oral).

 

47.  V. Supriya, M. Sugiyama and K. T. Ramakrishna Reddy:

Preparation and Characterization of ZnO:Co Films Deposited by Spray Pyrolysis,

National Conference on Mateirals for Energy Storage and Conversion (NCMESC-2010), Dpt. of Phys., Sri Venkateswara University, Tirupati, India, 2010.1.23-24 (oral).

 

46.  M. Sugiyama, T. Yasuniwa, Y. Hirose, K. Takakura, C. Fujiwara, H. Nakanishi, S. F. Chichibu, H. Ohyama, and S. Kimura:

     Impacts of proton, alpha-ray, and gamma-ray irradiation on the optical and electrical properties of Cu(In,Ga)Se2 thin films and solar cells,

      The 19th International Photovoltaic Science and Engineering Conference (PVSEC-19), ICC-Jeju, Jeju, Korea, 2009.11.9-13, CIG-P-39 (poster).

 

45.  M. Warasawa, C. Fujiwara, A. Umezawa, H. Nakanishi, M. Sugiyama, and S. F. Chichibu:

      Cu(In,Al)Se2 thin film growth by the selenization method using diethylselenide,

      The 19th International Photovoltaic Science and Engineering Conference (PVSEC-19), ICC-Jeju, Jeju, Korea, 2009.11.9-13, CIG-P-40 (poster).

 

44.  M. Sugiyama, A. Miyama, X. Dou, H. Nakanishi, S. F. Chichibu:

      Fabrication of CdS-free Cu(In,Ga)Se2 solar cells composed of a Zn-diffused photoabsorbing junction using dimethylzinc,

      34th IEEE Photovoltaic Specialists Conference (PVSC-34), Philadelphia, Marriott in Philadelphia, PA, USA, 2009.6.712, Area2-273 (poster).

 

43.  M. Sugiyama, T. Yasuniwa, X. Dou, H. Nakanishi, S. F. Chichibu, S. Kimura:

      Impacts of gamma-ray and proton irradiation on the Cu(In,Ga)Se2 thin films and solar cells,

      34th IEEE Photovoltaic Specialists Conference (PVSC-34), Philadelphia, Marriott in Philadelphia, PA, USA, 2009.6.712, Area6-484 (poster).

 

42.  M. Sugiyama, K. Miyauchi, T. Minemura, K. Nakagomi, Y. Mori, N. Kawada, H. Nakanishi:

     Sulfurization Growth of SnS Films and Fabrication of CdS/SnS Heterojunction for Solar Cells,

      2009 Materials Research Society (MRS) Spring Meeting, San Francisco, CA, USA, 2009.4.13-17, M-10 (poster).

 

41.  C. Fujiwara, A. Umezawa, T. Yasuniwa, A. Miyama, H. Nakanishi, M. Sugiyama, and S. F. Chichibu:

     Growth of Cu(In,Al)Se2 thin films by selenization using diethylselenide,

      2009 Materials Research Society (MRS) Spring Meeting, San Francisco, CA, USA, 2009.4.13-17, M-09 (poster).

 

40.  M. Sugiyama, T. Minemura, K. Miyauchi, K. Nakagomi, H. Nakanishi:

     Preparation of SnS Films Grown by Sulfurization and fabrication of SnS-Related Solar Cell,

     The 18th International Photovoltaic Science and Engineering Conference (PVSEC-18), Science City Convention Center, Kolkata, India, 2009.01.19-23, 3-1p-030 (poster).

 

39.  A. Miyama, X. Dou, T. Sato, H. Nakanish, S. F. Chichibu, M. Sugiyama:

     Fabrication of Zn doped Cu(In,Ga)Se2 thin film solar cells prepared by thermal diffusion of Zn using dimethylzinc,

     The 18th International Photovoltaic Science and Engineering Conference (PVSEC-18), Science City Convention Center, Kolkata, India, 2009.01.19-23, 3-1o-021 (oral).

 

38.  S. Ando, N.Takayama, M. Sugiyama, H. Nakanishi, and S. F. Chichibu:

      Preparation of CuInSe2 thin films by metalorganic decomposition with oxidation-reduction and subsequent selenization using diethylselenide,

   16th International Conference on Ternary and Multinary Compounds (ICTMC-16), Technical University Berlin, Germany 2008.09.15-19, No.134 (poster).

 

37.  S. Masaki, H. Nakanishi, M. Sugiyama, and S. F. Chichibu:

     Preparation of Ga-doped ZnO transparent conducting films by helicon-wave-excited plasma sputtering,

      16th International Conference on Ternary and Multinary Compounds (ICTMC-16), Technical University Berlin, Germany 2008.09.15-19, No.7 (oral).

 

36.  A. Miyama, T. Yasuniwa, A. Umezawa, H. Nakanishi, M. Sugiyama, and S.F. Chichibu:

     Fabrication of Zn doped Cu(In,Ga)Se2 thin film solar cells prepared by thermal diffusion of Zn using dimethylzinc,

      16th International Conference on Ternary and Multinary Compounds (ICTMC-16), Technical University Berlin, Germany 2008.09.15-19, No.6 (oral).

 

35.  S. Takahata, T. Imao, K. Saiki, H. Nakanishi, M. Sugiyama, and S.F. Chichibu:

     Helicon-wave-excited plasma sputtering and RF sputtering depositions of CuAlO2 thin films,

      16th International Conference on Ternary and Multinary Compounds (ICTMC-16), Technical University Berlin, Germany 2008.09.15-19, No.11 (oral).

 

34.  A. Umezawa, T. Yasuniwa, A. Miyama, H. Nakanishi, M. Sugiyama, and S. F. Chichibu:

     Growth of Cu(In,Al)Se2 thin films by selenization using diethylselenide,

      16th International Conference on Ternary and Multinary Compounds (ICTMC-16), Technical University Berlin, Germany 2008.09.15-19, No.13 (oral).

 

33.  T. Minemura, K. Miyauchi, K. Noguchi, K. Ohtsuka, H. Nakanishi, and M. Sugiyama:

     Preparation of SnS films by Sulfurization and Fabrication of SnS-related Solar Cell,

      16th International Conference on Ternary and Multinary Compounds (ICTMC-16), Technical University Berlin, Germany 2008.09.15-19, No.14 (poster).

 

32.  T. Yasuniwa, K. Murasawa, A. Umezawa, A. Miyama, H. Nakanishi, S. F. Chichibu, S. Kimura, and M. Sugiyama:

     Effects of proton and gamma-ray irradiation on the optical properties of CuInSe2 thin films,

      16th International Conference on Ternary and Multinary Compounds (ICTMC-16), Technical University Berlin, Germany 2008.09.15-19, No.55 (oral).

 

31.  K. Miyauchi, T. Minemura, K. Nakatani, H. Nakanishi, M. Sugiyama, and S. Shirakata:

     Photoluminescence property of ZnSnP2,

      16th International Conference on Ternary and Multinary Compounds (ICTMC-16), Technical University Berlin, Germany 2008.09.15-19, No.121 (oral).

 

30.  M. Sugiyama, A. Umezawa, T. Yasuniwa, A. Miyama, H. Nakanishi, and S. F. Chichibu:

      Growth of single-phase Cu(In,Al)Se2 alloys by selenization using diethylselenide,

      European Materials Research Society (E-MRS), 2008 Spring Meeting, Session L: Thin Film Chalcogenide Photovoltaic Materials, Strassbourg, France, 2008.5.26-30. L-P1-6 (poster).

 

29.  A. Miyama, T. Yasuniwa, A. Umezawa, H. Nakanishi, M. Sugiyama and S. F. Chichibu:

      Fabrication of a CuInSe2 pn junction prepared by thermal diffusion of  Zn using Dimethylzinc,

      17th International Photovoltaic Science and Engineering Conference (PVSEC-15), Fukuoka, Japan, 2007.12.03-07, 5P-P3-17 (poster).

 

28.  S. Masaki, H. Nakanishi, M. Sugiyama, and S. F. Chichibu:

     Preparation of ZnO:Ga thin films by helicon-wave-excited plasma sputtering method,

      The 34th International Symposium on Compound Semiconductors, Kyoto Japan, 2007.10.15-18, ThB II-4 (oral).

 

27.  S. Takahata, T. Imao, H. Nakanishi, M. Sugiyama, and S. F. Chichibu:

     Helicon-wave-excited plasma sputtering deposition of CuAlO2 thin films,

      The 34th International Symposium on Compound Semiconductors, Kyoto Japan, 2007.10.15-18, MoC P-38 (poster).

 

26. M. Sugiyama, A. Miyama, A. Umezawa, T. Yasuniwa, A. Kinoshita, H. Nakanishi, and S.F. Chichibu:

     Preparation of Zn-compound/CIGS Interface by Simple Thermal Annealing Using Dimethylzinc,

      2007 Materials Research Society (MRS) Spring Meeting, San Francisco, CA, USA, 2007.4.9-13, Y3-33 (poster).

 

25.  S. Merdes, M. Sugiyama, M. Sano, H. Nakanishi, S. Ando, and Z. Hadjoub:

     Structural and Optical Characterization of CuInSe2 Thin Films Prepared by Spin Coating Technique,

     21st European Photovoltaic Solar Energy Conference and Exhibition (E-PVSEC), Dresden, Germany, 2006.9.4-8, 4DO.6.5 (oral).

 

24.  M. Sugiyama, A. Kinoshita, M. Fukaya, H. Nakanishi, and S. F. Chichibu:

     Purely single-phase CuInGaSe2 alloy formation by selenization method using diethylselenide,

      European Materials Research Society (E-MRS) 2006 Spring Meeting (E-MRS - IUMRS - ICEM 06), Nice, France, 2006.5.29-6.2, O-PII-21, (poster).

 

23.  F.B.Dejene, M. Sugiyama, H. Nakanishi, V. Alberts and S. F. Chichibu:

     Influence of the Stacking Order on Structural Features of the Cu-In-Ga-Se Precursors for Formation of Cu(In, Ga)Se2 Thin Films  Prepared by Thermal Reaction of InSe/Cu/GaSe Alloys to Elemental Se Vapor and Diethylselenide Gas,
15th International Conference on Ternary and Multinary Compound (ICTMC-15), Kyoto, Japan, 2006.3.6-10, Tue-P-9A, (poster).

 

22.  A. Murayama, T. Imao, K. Saiki, H. Nakanishi, M. Sugiyama and  S. F. Chichibu:

     Helicon-Wave-Excited-Plasma Sputtering Deposition of Ga-doped ZnO Transparent Conducting Films for CIS-based Solar Cell Application,
15th International Conference on Ternary and Multinary Compound (ICTMC-15), Kyoto, Japan, 2006.3.6-10, Fri-O-3B, (oral).

 

21.  A. Kinoshita, M. Fukaya, H. Nakanishi, M. Sugiyama and S. F. Chichibu:
Preparation of High Ga-content CuIn1-xGaxSe2 Films by Selenization of Metal Precursors Using Diethylselenide as a Less-hazardous Source,

      15th International Conference on Ternary and Multinary Compound (ICTMC-15), Kyoto, Japan, 2006.3.6-10, Tue-P-14A, (poster).

 

20. M. Sugiyama, F. B. Dejene, A. Kinoshita, M. Fukaya, Y. Maru,  V. Alberts, H. Nakanishi and S. F. Chichibu:
Preparation of CuInGaSe2 Films by Selenization of Metal Precursors Premixed with Se using Diethylselenide,

      15th International Conference on Ternary and Multinary Compound (ICTMC-15), Kyoto, Japan, 2006.3.6-10, Tue-P-15A, (poster).

 

19.  M. Sugiyama, M. Fukaya, A. Kinoshita, Y. Hanou, H. Nakanishi, S. F. Chichibu:

     Preparation of CuIn1-xGaxSe2 Films by Selenization of Metal Precursors Using Diethylselenide as a Less-Hazardous Source,

      15th International Photovoltaic Science and Engineering Conference (PVSEC-15), Shanghai, China, 2005.10.10-15, PV0147-V4, P1-63, (poster), Tech. Digest pp.1180-1181.

 

18.  F. B. Dejene, M. Sugiyama, V. Alberts, S. F. Chichibu, H. C. Alberts:
Use of diethylselenide [(C2H5)2Se: DESe] as a less-hazardous source for preparation of Cu(In, Ga)Se2 thin films by selenization,

      SOUTH AFRICA INSTITUTE OF PHYSICS, 2005.7.4-7, (poster).

 

17.  M. Sugiyama, M. Kinoshita, and H. Nakanishi:

     Growth of ZnInGaS4 by normal freezing method,

      The 14th International Conference on Ternary and Multinary Compounds (ICTMC-14), Denver, CO, USA 2004.9.27-10.1, (poster).

 

16.  T. Kitamura, X-Q. Shen, M. Shimizu, H. Okumura, M. Sugiyama, H. Nakanishi:
Growth and Characterization of High In Composition InGaN epilayers by rf-MBE,
31st International Symposium on Compound Semiconductors (ISCS-2004), Seoul National University, Seoul, Korea, 2004.9.12-16, (poster).

 

15.  S. F. Chichibu, A. Uedono, T. Onuma, T. Koida, M. Sugiyama, B. A. Haskell, M. Sumiya, H. Okumura, T. Sota, J. S. Speck, S. P. DenBaars, and S. Nakamura:
Direct comparison of defect density and photoluminescence lifetime in polar and nonpolar wurtzite and zincblende GaN studied by time-resolved photoluminescence and slow positron annihilation techniques,
International Workshop on Nitride Semiconductors 2004 (IWN2004), Pittsburg, USA, 2004.7.19-23, No.A10.3 (Oral).

 

14.  T. Nosaka, M. Sugiyama, T. Suzuki, T. Koida, K. Nakajima, T. Aoyama, M. Sumiya, T. Chikyow, A. Uedono, and S. F. Chichibu:
Reduction of point defect in cubic GaN epilayers on (001) GaAs substrates using AlxGa1-xN/GaN superlattice underlayers,
The 12th International Conference on Metal Organic Vapor Phase Epitaxy (ICMOVPE-12), Lahaina, Maui, Hawai, 2004.5.30-6.4, Wide Gap Nitrides No.31 (poster).

13. M. Sugiyama, T. Nosaka, K. Nakajima, P. Ahmet, T. Aoyama, T. Chikyow, and S. F. Chichibu:

     Effects of deposition parameters of low-temperature GaN buffer layer on the structural and optical properties of cubic GaN epilayers on GaAs (001) substrates grown by MOVPE,

      The 5th International Conference on Nitride Semiconductors (ICNS-5), Nara, Japan, 2003.5.25-30, No.Tu-P2.016 (poster).

 

12. M. Sugiyama, R. Nakai, H. Nakanishi, and SF. Chichibu:

     Interface Fermi level pinning in a Cu/p-CuGaS2 Schottky diode,

      The 13th International Conference on Ternary and Multinary Compounds (ICTMC-13), Paris, France 2002.10.14-16, (poster).

 

11. SF. Chichibu, Y. Harada, M. Sugiyama, and H. Nakanishi:

     Metalorganic vapor phase epitaxy of Cu(AlxGa1-x)(SySe1-y)2 chalcopyrite semiconductors and their band offsets,

      The 13th International Conference on Ternary and Multinary Compounds (ICTMC-13), Paris, France 2002.10.14-16, O4-1 (Invited-oral).

 

10. S. F. Chichibu, M. Sugiyama, T. Onuma, T. Kuroda, A. Tackeuchi, T. Sota, T. Kitamura, H. Nakanishi, Y. Ishida, H. Okumura, S. Keller, S. P. DenBaars, U. K. Mishra, and S. Nakamura:

     Similarities in the optical properties of hexagonal and cubic InGaN quantum wells,

      Materials Research Society, 2001 Fall Meeting, Session I: GaN and Related Alloys, Boston, MA, USA, 2001.11.26-30, No.I7.5 (Oral).

      Materials Research Society Symposium Proceedings Series Vol.693 (2002) pp.481-486.

 

9. S. F. Chichibu, T. Azuhata, M. Sugiyama, T. Kitamura, Y. Ishida, H. Okumura, H. Nakanishi, T. Sota, T. Mukai, and S. Nakamura:

     Optical and structural studies in InGaN quantum well structure laser diodes,

      28th Conference on the Physics and Chemistry of Semiconductor Interfaces (PCSI-28), Orlando, Florida, USA, 2001.1.7-11, No.Mo0905 (Invited).

 

8. S. F. Chichibu, A. Setoguchi, T. Azuhata, J. Mullhauser, M. Sugiyama, T. Mizutani, T. Deguchi, H. Nakanishi, T. Sota, O. Brandt, K. H. Ploog, T. Mukai, and S. Nakamura:

     Effective localization of quantum well excitons in InGaN quantum well structures with high InN mole fraction,

      International Symposium on Blue Laser and Light Emitting Diodes (ISBLLED 2000), Berlin, Germany, 2000.3.6-10, No.ThC1 (oral).

             

7. K. Yoshino, M. Sugiyama, D. Maruoka, S. F. Chichibu, H. Komaki, K. Umeda, and T. Ikari:

     Photoluminescence spectra of CuGaSe2 crystals,

      The 9th International Conference on Shallow Centers in Semiconductors (SLCS-9), Awaji Island, Hyogo, Japan, 2000.9.24-27.

 

6.  N. Mitani, K. Yoshino, M. Sugiyama, S. Chichibu, H. Komaki, and T. Ikari:

     Optical and electrical properties of AgIn(SSe)2 crystals,

      The 9th International Conference on Shallow Centers in Semiconductors (SLCS-9), Awaji Island, Hyogo, Japan, 2000.9.24-27, No. MoP-15 (poster).

 

5.  K. Yoshino, N. Mitani, M. Sugiyama, S. Chichibu, H. Nakanishi, and T. Ikari:

     Crystal growth of high purity AgIn(SXSe1-X)2 single crystals,

      Twelfth International Conference on Ternary and Multinary Compounds (ICTMC-12), National Tsing Hua University, Taiwan, 2000.3.13-17, Tu-A4-1, (oral).

 

4.  M. Sugiyama, N. Mitani, K. Yoshino, T. Ikari, H. Nakanishi, and S. Chichibu:

     Optical properties of AgIn(SXSe1-X)2,

      Twelfth International Conference on Ternary and Multinary Compounds (ICTMC-12), National Tsing Hua University, Taiwan, 2000.3.13-17, P1-53, (poster).

 

3.  S. Chichibu, T. Deguchi, A. Setoguchi, M. Sugiyama, H. Nakanishi, T. Sota, T. Mukai, and S. Nakamura:

     Comparison of Optical Properties in GaN/AlGaN and InGaN/AlGaN Single Quantum Wells,

      1999 International Conference on Solid State Devices and Materials (SSDM'99). 1999.9.22.

 

2.  S. Chichibu, S. Shirakata, M. Sugiyama, and H. Nakanishi:

     Ultraviolet excitonic photoluminescence from CuAlS2 heteroepitaxial films grown by metalorganic vapor phase epitaxy,

      The 2nd International Symposium on Blue Laser and Light Emitting Diodes, Chiba, Japan, 1998.9.29-10.2, Th-P40 (poster).

 

1.    M. Sugiyama, S. Chichibu, A. Shikanai, T. Azuhata, T. Sota, H. Amano, and I.Akasaki:

     Photoreflectance and Photoluminescence Spectra of Tensile-Strained Wurtzite GaN Epilayers,

      The 2nd International Conference on Nitride Semiconductors (ICNS'97), Tokushima, Japan, 1997.10.29, P2-33. (poster).