論文

• Takahito Nishimura, Yoshiaki Hirai, Yasuyoshi Kurokawa, AKIRA YAMADA. Control of valence band offset at CdS/Cu(In,Ga)Se2 interface by inserting wide-bandgap materials for suppression of interfacial recombination in Cu(In,Ga)Se2 solar cells, Japanese Journal of Applied Physics, Volume 54, 8S1, 08KC08, July 2015.
• Takahito Nishimura, Yoshiaki Hirai, Yasuyoshi Kurokawa, Akira Yamada. Fabrication of Cu(In,Ga)Se2 solar cells with a single graded band profile, Physica Status Solidi (b), Vol. 252, No. 6, pp. 1235-1238, May 2015.
• Yoshiaki Hirai, AKIRA YAMADA, Yasuyoshi Kurokawa. Numerical study of Cu(In,Ga)Se2 solar cell performance toward 23% conversion efficiency, Japanese Journal of Applied Physics, vol. 53, pp. 012301-1–012301-6, Dec. 2013.
• Yoshiaki Hirai, Yukiya Hidaka, Yasuyoshi Kurokawa, Akira Yamada. Improvement of the Band Profile of Cu(In,Ga)Se2 Solar Cells with High-Ga Content Prepared Using a Five-Stage Method, Japanese Journal of Applied Physics, The Japan Society of Applied Physics, 51, 10NC03, Oct. 2012.
• Yoshiaki Hirai, Hiroshi Nagashima, Yasuyoshi Kurokawa, Akira Yamada. Experimental and Theoretical Evaluation of Cu(In,Ga)Se2 Concentrator Solar Cells, Japanese Journal of Applied Physics, Vol. 51, p. 014101-1, Apr. 2012.

国際会議発表 (査読有り)

• Takahito Nishimura, Yoshiaki Hirai, Yasuyoshi Kurokawa, Akira Yamada. Theoretical and Experimental Investigation of the Recombination Reduction at CdS/Cu(In,Ga)Se2 Interface by Valence and control, 2015 MRS Spring Meeting & Exhibit Sanfransisco, Apr. 2015.
• T. Nishimura, Y. Hirai, Y. Kurokawa, A. Yamada. Suppression of Recombination at a CdS/CIGS Interface by Inserting Cu(In,Ga)3Se5 for Cu(In,Ga)Se2 Solar Cells, The 6th World Conference on Photovoltaic Energy Convension, Nov. 2014.
• T. Nishimura, S. Kasashima, Y. Hirai, Y. Kurokawa, A. Yamada. Fabrication of Cu(In,Ga)Se2 solar cells with a single graded band profile, 19th International Conference on Ternary and Multinary Compounds, ICTMC-19 Book of Abstracts, Page Thu-O-2A, Sept. 2014.
• Yoshiaki Hirai, Ryotaro Suzuki, Yasuyoshi Kurokawa, Akira Yamada. Numerical Simulation about Effects of Bandgap Grading in Cu(In,Ga)Se2 with a Bandgap of 1.4 eV on Solar Cell, 39th IEEE Photovoltaic Specialist Conference, June 2013.
• Yoshiaki Hirai, Yasuyoshi Kurokawa, Akira Yamada. High Temperature Preparation of Cu(In,Ga)Se2 Thin Films with High Ga content, The First International Education Forum on Environment and Energy Science, Dec. 2012.
• Yoshiaki Hirai, Takao Kashima, Yasuyoshi Kurokawa, AKIRA YAMADA. High Temperature Preparation of Cu(In,Ga)Se2 Thin Films with High Ga Content, 27th European Photovoltaic Solar Energy Conference, Sept. 2012.
• Yoshiaki Hirai, Yasuyoshi Kurokawa, Akira Yamada. IMPROVEMENT OF THE BAND PROFILE OF Cu(In,Ga)Se2 SOLAR CELLS WITH HIGH-Ga CONTENT PREPARED BY A FIVE-STAGE METHOD, The 5th International Forum on Multidisciplinary Education and Research for Energy Science, Sept. 2012.
• Shunsuke Kasashima, Ryotaro Kogure, Sorapong Inthisang, Yoshiaki Hirai, Porponth Sichanugrist, Akira Yamada, Makoto Konagai. FOUR-TERMINAL THIN-FILM SOLAR CELLS FOR LOW CONCENTRATION PHOTOVOLTAICS, The 21st International Photovoltaic Science and Engineering Conference (PVSEC-21), Nov. 2011.
• Yoshiaki Hirai, Yasuyoshi Kurokawa, AKIRA YAMADA. IMPROVEMENT OF THE BAND PROFILE OF Cu(In,Ga)Se2 SOLAR CELLS WITH HIGH-Ga CONTENT PREPARED BY A FIVE-STAGE METHOD, The 21st International Photovoltaic Science and Engineering Conference (PVSEC-21), Nov. 2011.

国内会議発表 (査読有り)

• 平井義晃, 鈴木良太郎, 黒川康良, 山田明. Cu(In,Ga)Se2のバンドプロファイルが太陽電池特性に及ぼす影響の理論解析, 第60回応用物理学会春季学術講演会, 28a-G4-11, Mar. 2013.

国際会議発表 (査読なし・不明)

• T. Nishimura, Y. Hirai, Y. Kurokawa, A. Yamada. Improving efficiency of Cu(InGa)Se2 solar cells by inserting Cu(InGa)3Se5 interface layer, 7th International Symposium on Innovative Solar Cells, Jan. 2015.
• Takahito Nishimura, Yoshiaki Hirai, Yasuyoshi Kurokawa, AKIRA YAMADA. Influence by Inserting Wide-gap Material at CdS/Cu(In,Ga)Se2 Interface for Cu(In,Ga)Se2 Solar Cells, The 3rd International Education Forum on Environment and Energy Science, Dec. 2014.
• AKIRA YAMADA, Yoshiaki Hirai, Yasuyoshi Kurokawa. An approach to enhance the CIGS solar cell efficiency up to 23%; numerical results, 2013 JSAP-MRS Joint Symposia, 20a-M2-1, Sept. 2013.
• Akira YAMADA, Yoshiaki HIRAI, Yasuyoshi KUROKAWA. Highly Efficient CIGS Solar Cells:Highly Efficient CIGS Solar Cells:, PVSEC-23, 2013.
• Yoshiaki Hirai, Yasuyoshi Kurokawa, Akira Yamada. Theoretical evaluation of effect of Cu(In, Ga)Se2 Band Profile on Solar Cell Performance taking into Account the Novel Absorption Coefficient, Korea-Japan Top University League Workshop on Photovoltaics 2012 (TOP-PV 2012), Aug. 2012.
• Sinae Kim, Fuminori Takahashi, Shunsuke Kasashima, Yoshiaki Hirai, Sichanugrist Porponth, Akira Yamada, Makoto Konagai. Development of Thin-Film Solar Cells Using Solar Spectrum Splitting Technique, 38th IEEE Photovoltaic Specialists Conference, June 2012.
• Xianfeng Zhang, Tsuyoshi Kobayashi, Satoshi Oonishi, Yoshiaki Hirai, Yuta Nakajima, Yasuyoshi Kurokawa, Akira Yamada. Progress Towards Realization of Chalcopyrite-Based Tandem Solar Cells, International Symposium on Innovative Solar Cells 2012, Mar. 2012.
• Akira Yamada, Xianfeng Zhang, Satoshi Oonishi, Hiroshi Nagashima, Yukiya Hidaka, Yuta Nakajima, Tsuyoshi Kobayashi, Yoshiaki Hirai, Yasuyoshi Kurokawa. Approaches to realization of Cu(InGa)Se2-based tandem solar cells, International Symposium on Innovative Solar Cells 2010, Oct. 2010.

国内会議発表 (査読なし・不明)

• 西村昂人, 平井義晃, 黒川康良, 山田明. Cu(InGa)Se2薄膜太陽電池の価電子帯制御による界面再結合抑制効果の理論及び実験的検証, 第62回応用物理学会春季学術講演会, Mar. 2015.
• 西村昂人, 平井義晃, 黒川康良, 山田明. Cu(In,Ga)Se2太陽電池への Cu(In,Ga) 3Se5導入による界面再結合の抑制, 第75回応用物理学会秋季学術講演会, Sept. 2014.
• 平井義晃, 西村昂人, 黒川康良, 山田明. 高いGa組成を有するCu(InGa)Se2薄膜表面へのZnSe挿入が太陽電池特性に及ぼす影響, 第11回 「次世代の太陽光発電システム」シンポジウム, July 2014.
• Akira Yamada, Takeshi Umehara, Dongduong Nguyenphuc, Satoshi Onishi, Yoshiaki Hirai, Shunsuke Kasashima, Yasuyoshi Kurokawa. Towards Realization of Thin-Film Full Supectrum Solar Cells using Chalcopyrite-Based Solar Cells, 6th International Symposium on Innovative Solar Cells, Jan. 2014.
• 平井 義晃, 鈴木 良太郎, 黒川 康良, 山田 明. Cu(In,Ga)Se2のバンドプロファイルが太陽電池特性に及ぼす影響に関する理論解析, 学振175委員会 第１０回次世代の太陽光発電システムシンポジウム, May 2013.
• Yoshiaki Hirai, Akira Yamada. HIGH TEMPERATURE PREPARATION OF Cu(In,Ga)Se2 THIN FILMS, The Fourth Energy-GCOE Career Development Program Forum, Sept. 2012.
• 平井義晃, 鹿島隆雄, 黒川康良, 山田 明. 高いGa組成を有するCu(In,Ga)Se2薄膜の高温製膜, 平成24年秋季 第73回応用物理学会学術講演会, Sept. 2012.
• 平井義晃, 黒川康良, 山田明. ｢講演奨励賞受賞記念講演｣低光吸収係数を考慮したCu(In,Ga)Se2太陽電池及びそのバンドプロファイルの理論解析, 2012年春季 第59回 応用物理学関係連合講演会, Mar. 2012.
• 高橋 史哲, 笠嶋 俊介, 金 信愛, 平井 義晃, Porponth Sichanugrist, 山田 明, 小長井 誠. 波長スプリッティング型薄膜太陽電池の開発, 2012年春季第59回応用物理学関係連合講演会, Mar. 2012.
• 木暮亮太郎, 笠嶋俊介, 平井義晃, Sichanugrist Porponth, 山田 明, 小長井誠. 低倍率集光型a-SiO:H/a-Si:H//CIGS四端子タンデム薄膜太陽電池, 2012年春季第59回応用物理学関係連合講演会, Mar. 2012.
• 高橋史哲, 笠嶋俊介, KimSinae, 平井義晃, Porponth Sichanugrist, 山田明, 小長井誠. 波長スプリッティング型薄膜太陽電池の開発, 2012年春季 第59回 応用物理学関係連合講演会, 2012.
• 木暮亮太郎, 笠嶋俊介, 平井義晃, Porponth Sichanugrist, 山田明, 小長井誠. a-Si:H//CIGS 四端子タンデム薄膜太陽電池の開発, 2011年秋季 第72回 応用物理学会学術講演会, Sept. 2011.
• 平井義晃, 黒川康良, 山田明. 多段階法で作製した高いGa組成を有するCu(In,Ga)Se2太陽電池バンドプロファイル, 2011年秋季 第72回 応用物理学会学術講演会, Aug. 2011.

学位論文

• Study of High Efficiency Cu(InGa)Se2 Solar Cells with High Ga Content,  Outline,  博士（工学）,  Tokyo Institute of Technology,  2015/03/26,   
• Study of High Efficiency Cu(InGa)Se2 Solar Cells with High Ga Content,  Exam Summary,  博士（工学）,  Tokyo Institute of Technology,  2015/03/26,   
• Study of High Efficiency Cu(InGa)Se2 Solar Cells with High Ga Content,  Summary,  博士（工学）,  Tokyo Institute of Technology,  2015/03/26,   
• Study of High Efficiency Cu(InGa)Se2 Solar Cells with High Ga Content,  Thesis,  Doctor (Engineering),  Tokyo Institute of Technology,  2015/03/26, 

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