"Ryotaro Fukuda,Shinkai Shimizu,Akira Yamada","Analysis of grain boundary and CdS/Cu(In,Ga)Se2 interface by using EBIC measurements","31st International Photovoltaic Science and Engineering Conference (PVSEC-31)",,,,,,2021,Dec. "Dwinanri Egyna,Kazuyoshi Nakada,Akira Yamada","Benefits of Low Electron-Affinity Material as the N-Type Layer for Cu(In,Ga)S2 Solar Cell",,"Energies",," 15"," 1"," 4",2021,Dec. "Billy J Stanbery,Daniel Abou-Ras,Akira Yamada,Lorelle Mansfield","CIGS photovoltaics: reviewing an evolving paradigm",,"J. Phys. D: Appl. Phys.",,"vol. 55",," 173001",2021,Dec. "石塚尚吾,西永慈郎,Kosuke Beppu,前田毅,青柳風香,Takahiro Wada,AKIRA YAMADA,Jakapan Chantana,Takahito Nishimura,峯元高志,Muhanmad Monirul Islam,櫻井岳暁,寺田教男","CIS系太陽電池の現在とこれからの研究開発課題","令和3年度 応用物理学会 多元化合物・太陽電池研究会 年末講演会",,,,,,2021,Dec. "Ryotaro Fukuda,Shinkai Shimizu,AKIRA YAMADA","EBIC法を用いたCu(In,Ga)Se2太陽電池の評価(?)","第82回応用物理学会秋季学術講演会",,,,,,2021,Sept. "Dwinanri Egyna,Ryoma Yomeda,Kosuke Beppu,Takahiro Wada,Yamada Akira","Growth of Zn-Ge-O Thin Film as a Transparent Conductive Oxide With a Low Electron Affinity","第82回 応用物理学会秋季学術講演会",,,,,,2021,Sept. "Dwinanri Egyna,Kazuyoshi Nakada,Akira Yamada","The Importance of Low Electron Affinity Materials as the n-type Layers of Cu(In, Ga)S2 Solar Cell Design","48th IEEE Photovoltaic Specialists (PVSC)",,,,,,2021,June "Dwinanri Egyna,Kazuyoshi Nakada,Akira Yamada","The Advantage of Low Electron Affinity Materials as the Window Layer of Buffer-free CIGS2 Solar Cells","応用物理学会春季学術講演会",,,,,,2021,Mar. "Ryotaro Fukuda,Kazuyoshi Nakada,AKIRA YAMADA","EBIC法を用いたCu(In,Ga)Se2太陽電池の評価","応用物理学会春季学術講演会",,,,,,2021,Mar. "Kazuyoshi Nakada,Takahito Nishimura,Naoki Suyama,Akira Yamada","Cathode luminescence analysis of Cu(In,Ga)Se2 solar cells treated with thiourea solution",,"Japanese Journal of Applied Physics",," 60",," 031001",2021,Feb.