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- Dae-Hyung Cho
- Electronics and Telecommunications Research Institute 1 , 218 Gajeongno, Yuseong-gu, Daejeon 305-700, South Korea
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- Kyu-Seok Lee
- Electronics and Telecommunications Research Institute 1 , 218 Gajeongno, Yuseong-gu, Daejeon 305-700, South Korea
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- Yong-Duck Chung
- Electronics and Telecommunications Research Institute 1 , 218 Gajeongno, Yuseong-gu, Daejeon 305-700, South Korea
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- Ju-Hee Kim
- Electronics and Telecommunications Research Institute 1 , 218 Gajeongno, Yuseong-gu, Daejeon 305-700, South Korea
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- Soo-Jeong Park
- Electronics and Telecommunications Research Institute 1 , 218 Gajeongno, Yuseong-gu, Daejeon 305-700, South Korea
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- Jeha Kim
- Research Institute of Photovoltaics, Cheongju University 3 , Cheongju 360-764, South Korea
書誌事項
- 公開日
- 2012-07-09
- DOI
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- 10.1063/1.4733679
- 公開者
- AIP Publishing
この論文をさがす
説明
<jats:p>We report the effect of Na on the electronic properties of Cu(In,Ga)Se2 (CIGS) thin-film solar cells with a structure of grid/ITO/i-ZnO/CdS/CIGS/Mo/SiOx/soda-lime glass (SLG). The diffusion of Na from the SLG into the CIGS layer was systematically controlled by varying the thickness of SiOx. As the Na content increased, the hole concentration of CIGS was enhanced, while the band-gap was nearly constant, which led to a lower Fermi level in the CIGS towards its valence-band edge. The Na-induced increment in the built-in potential (Vbi) across the n-(ITO/i-ZnO/CdS)/p-CIGS junction yielded an increment of open-circuit voltage that well agreed with the calculated Vbi.</jats:p>
収録刊行物
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- Applied Physics Letters
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Applied Physics Letters 101 (2), 2012-07-09
AIP Publishing
