Effects of etching on surface structure of Cu2ZnSn(S,Se)(4) absorber and performance of solar cell

doi:10.1016/j.solener.2018.08.016

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	Effects of etching on surface structure of Cu2ZnSn(S,Se)(4) absorber and performance of solar cell
	Luan, H. M.; Yao, B.; Li, Y. F.; Liu, R. J.; Ding, Z. H.; Shi, K.; Li, Y.; Zhang, Z. Z.; Zhao, H. F.; Zhang, L. G.
	2018
发表期刊	Solar Energy
ISSN	0038-092X
卷号	173 页码:696-701
摘要	Cu2ZnSn(S,Se)(4) (CZTSSe) films with smooth surface were prepared by solution approach and etched (etched-CZTSSe) through using KMnO4 in a H2SO4 based medium followed by Na2S. Two types of solar cells with conventional structure were fabricated with CZTSSe and etched-CZTSSe as absorber, respectively. It is demonstrated by XRD, XPS, EDS and Raman measurement that the bulk CZTSSe is of kesterite structure while its surface contains a small amount of Cu2ZnSn3Se8 and ZnSe secondary phases besides kesterite CZTSSe. On the surface, the Cu2ZnSn3Se8 is completely removed after etching while the ZnSe is partially. It is found that the elimination or reduction of the secondary phases increase the shunt resistance greatly, leading to a larger open circuit voltage (V-oc) which results in the improvement of power conversion efficiency (PCE) for the etched-CZTSSe-based solar cell. The PCE has a maximum increase of 26% by etching. An intensive study has been made for the influencing mechanism of etching on the PCE of solar cells.
关键词	Solar cell CZTSSe Etching Secondary phases Cu2ZnSn3Se8 cu2znsn(sxse1-x)(4) thin-films sulfo-selenization phase-formation impact temperature precursors mechanism growth Energy & Fuels
DOI	10.1016/j.solener.2018.08.016
收录类别	SCI ; EI
引用统计
文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/60969
专题	中国科学院长春光学精密机械与物理研究所
推荐引用方式 GB/T 7714	Luan, H. M.,Yao, B.,Li, Y. F.,et al. Effects of etching on surface structure of Cu2ZnSn(S,Se)(4) absorber and performance of solar cell[J]. Solar Energy,2018,173:696-701.
APA	Luan, H. M..,Yao, B..,Li, Y. F..,Liu, R. J..,Ding, Z. H..,...&Zhang, L. G..(2018).Effects of etching on surface structure of Cu2ZnSn(S,Se)(4) absorber and performance of solar cell.Solar Energy,173,696-701.
MLA	Luan, H. M.,et al."Effects of etching on surface structure of Cu2ZnSn(S,Se)(4) absorber and performance of solar cell".Solar Energy 173(2018):696-701.

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