NDLI: CZTSe solar cells prepared by electrodeposition of Cu/Sn/Zn stack layer followed by selenization at low Se pressure

Content Provider	PubMed Central
Author	Yao, Liyong Ao, Jianping Jeng, Ming-jer Bi, Jinlian Gao, Shoushuai He, Qing Zhou, Zhiqiang Sun, Guozhong Sun, Yun Chang, Liann-be Chen, Jian-wun
Copyright Year	2014
Abstract	Cu2ZnSnSe4 (CZTSe) thin films are prepared by the electrodeposition of stack copper/tin/zinc (Cu/Sn/Zn) precursors, followed by selenization with a tin source at a substrate temperature of 530°C. Three selenization processes were performed herein to study the effects of the source of tin on the quality of CZTSe thin films that are formed at low Se pressure. Much elemental Sn is lost from CZTSe thin films during selenization without a source of tin. The loss of Sn from CZTSe thin films in selenization was suppressed herein using a tin source at 400°C (A2) or 530°C (A3). A copper-poor and zinc-rich CZTSe absorber layer with Cu/Sn, Zn/Sn, Cu/(Zn + Sn), and Zn/(Cu + Zn + Sn) with metallic element ratios of 1.86, 1.24, 0.83, and 0.3, respectively, was obtained in a selenization with a tin source at 530°C. The crystallized CZTSe thin film exhibited an increasingly (112)-preferred orientation at higher tin selenide (SnSe x ) partial pressure. The lack of any obvious Mo-Se phase-related diffraction peaks in the X-ray diffraction (XRD) diffraction patterns may have arisen from the low Se pressure in the selenization processes. The scanning electron microscope (SEM) images reveal a compact surface morphology and a moderate grain size. CZTSe solar cells with an efficiency of 4.81% were produced by the low-cost fabrication process that is elucidated herein.
Related Links	http://dx.doi.org/10.1186/1556-276x-9-678
Starting Page	678
File Format	PDF
ISSN	1556276X
e-ISSN	1556276X
Journal	Nanoscale Research Letters
Issue Number	1
Volume Number	9
Language	English
Publisher	Springer
Publisher Date	2014-01-01
Access Restriction	Open
Rights Holder	Springer
Subject Keyword	Materials Science(all) Condensed Matter Physics Research in Higher Education
Content Type	Text
Resource Type	Article
Subject	Nanoscience and Nanotechnology Condensed Matter Physics

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