Improved performance in Cu₂ZnSnSe₄ solar cells using a sandwich-structured ZnSe/Cu₂SnSe₃/ZnSe precursor

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• 作者：Kang Min Kim^a ; ^b ; Hitoshi Tampo^a ; Shinho Kim^a ; Hajime Shibata^a ; Shigeru Niki^a ; HyukSu Han^b ; ^{hhan@kitech.re.kr}
• 关键词：Solar cell ; Thin film ; Cu2ZnSnSe4
• 刊名：Current Applied Physics
• 出版年：2017
• 出版时间：March 2017
• 年：2017
• 卷：17
• 期：3
• 页码：366-369
• 全文大小：1293 K
• 卷排序：17

文摘

The excess ZnSe can be eliminated using the sandwich-structured precursor even for the CZTSe films with high (>1.1) Zn/Sn ratios. The presence of excess ZnSe phase on top of the CZTSe thin film can be related to the deterioration of the solar cell properties, especially the lower current density. Modification of the precursor structure improved the cell efficiency from 6% (bilayer precursor) to 9% (sandwich-structured precursor) and is promising for future improvements in the CZTSe cell efficiency.