Tunable work function of molybdenum oxynitride for electron-selective contact in crystalline silicon solar cells
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作者
Gu, Zeyu; Li, Le; Du, Guanlin; Lin, Yinyue; Lu, Linfeng; Chen, Jia; Du, Zheren; Liu, Ronglin; Cheng, Quan; Gao, Kun; Yang, Xinbo; Li, Dongdong
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刊物名称
APPLIED PHYSICS LETTERS
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年、卷、文献号
2022, 120, 0003-6951
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关键词
Gu, Zeyu; Li, Le; Du, Guanlin; Lin, Yinyue; Lu, Linfeng; Chen, Jia; Du, Zheren; Liu, Ronglin; Cheng, Quan; Gao, Kun; Yang, Xinbo; Li, Dongdong
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摘要
Dopant-free carrier-selective contacts based on metal compounds have attracted considerable attention for high-efficiency crystalline silicon solar cells. In this work, the feasibility of using molybdenum oxynitride (MoOxNy) as an electron-selective contact layer in n-type crystalline silicon (n-Si) solar cells has been demonstrated. With the increase in the N-2:Ar ratio during the sputtering process, the work function of a MoOxNy film decreases from 4.57 to 4.26 eV, which is advantageous for the MoOxNy film to be an electron transport layer. An efficiency of 18.0% has been achieved in n-Si based solar cells using a full-area MoOxNy contact for electron extraction, featuring a high fill factor of 84.6%. Published under an exclusive license by AIP Publishing.
