Study on influences of CdZnS buffer layer on CdTe solar cells

This paper deals with the Cd1-xZnxS/CdTe solar cell, with the structure parameters confirmed by basic theories, reports and experiments. The influences of x composition and the buffer layer width on the open circuit voltage, the short circuit current, the fill factor, and the conversion efficiency a...

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Bibliographic Details
Published in:Superlattices and microstructures 2017-09, Vol.109, p.463-469
Main Authors: Xu, Xiao-Bo, Wang, Xiao-Yan, Gu, Wen-Ping, Quan, Si, Zhang, Zan
Format: Article
Language:English
Subjects:
Cd1-xZnxS
CdTe
Solar cell
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Summary:This paper deals with the Cd1-xZnxS/CdTe solar cell, with the structure parameters confirmed by basic theories, reports and experiments. The influences of x composition and the buffer layer width on the open circuit voltage, the short circuit current, the fill factor, and the conversion efficiency are discussed by numerical simulation. It is shown that the optimized buffer layer should be Cd0.4Zn0.6S, and the width is 30 nm based on the simulation. The Cd1-xZnxS introduction indeed increases the blue portion absorption of solar spectrum and the efficiency of CdTe solar cells is thus improved. •Material parameters of Cd1-xZnxS are selected and confirmed with different x.•The optimal x content is found to be 0.6 for the improved performance.•The optimal Cd1-xZnxS width is found to be 30 nm.•The efficiency increases from 15.42% to 17.71% with the optimized CdZnS layer.
ISSN:0749-6036
1096-3677
DOI:10.1016/j.spmi.2017.05.033