Theoretical Photovoltaic Conversion Efficiencies of ZnSnP
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概要
- 論文の詳細を見る
The performances of ZnSnP<inf>2</inf>, CdSnP<inf>2</inf>, and Zn<inf>1-x</inf>Cd<inf>x</inf>SnP<inf>2</inf>alloys as solar cell photoabsorbers are assessed using photovoltaic conversion efficiency simulations in conjunction with first-principles calculations based on hybrid density functional theory. The band gap of Zn<inf>1-x</inf>Cd<inf>x</inf>SnP<inf>2</inf>decreases with increasing Cd content x and shows a small bowing. The electronic structure and optical absorption spectrum depend weakly on the composition, aside from the band gap and spectral threshold. The conversion efficiency is almost converged to the Shockley--Queisser limit at a photoabsorber thickness of a few micrometers for any composition of Zn<inf>1-x</inf>Cd<inf>x</inf>SnP<inf>2</inf>, similarly to the cases of GaAs, CdTe, CuInSe<inf>2</inf>, and CuGaSe<inf>2</inf>.
- 2013-06-25
著者
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Oba Fumiyasu
Department Of Materials Science And Engineering Kyoto University
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Seko Atsuto
Department Of Materials Science And Engineering Kyoto University
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Nose Yoshitaro
Department Of Materials Science And Engineering Faculty Of Engineering Kyoto University
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Tanaka Isao
Department Of Internal Medicine Suzuka Kaisei Hospital
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Tanaka Isao
Department of Materials Science and Engineering, Kyoto University, Kyoto 606-8501, Japan
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Hayashi Hiroyuki
Research Center for Low Temperature and Materials Science, Kyoto University, Kyoto 606-8501, Japan
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Yokoyama Tomoyasu
Department of Materials Science and Engineering, Kyoto University, Kyoto 606-8501, Japan
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Nose Yoshitaro
Department of Materials Science and Engineering, Kyoto University, Kyoto 606-8501, Japan
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