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Proceedings Paper

Preparation of CuInSe2 thin films by spin-coating and selenization
Author(s): Niangjuan Yao; Jianhua Ma; Xiaojing Zhu; Yan Liang; Jinchun Jiang; Junhao Chu
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Paper Abstract

In order to fabricate low cost and printable CuInSe2 (CIS) thin film solar cells, a chemical process has been developed to fabricate uniform CIS films with large grain size and close stoichiometry to chalcopyrite phase. Cu(NO3)2, InCl3 and ethyl cellulose (EC) were adopted to form the starting solution. CIS films were prepared by spin-coating and selenization. Precursor films and CIS films were investigated by SEM, EDS and XRD. CuCl and InCl3 crystals appeared in the precursor films. During the selenization process, CuCl first reacted with Se vapor to form Cu2-xSe. With increasing selenization temperature, InCl3 reacted with Cu2-xSe to form CIS accompanying the evaporation of chlorine in the form of gas. It is revealed that the element ratio in final CIS film is determined by the raw material ratio in the starting solution and the selenization temperature.

Paper Details

Date Published: 16 December 2013
PDF: 5 pages
Proc. SPIE 9068, Eighth International Conference on Thin Film Physics and Applications, 906806 (16 December 2013); doi: 10.1117/12.2053761
Show Author Affiliations
Niangjuan Yao, Shanghai Institute of Technical Physics (China)
Shanghai Ctr. for Photovoltaics (China)
Jianhua Ma, Shanghai Institute of Technical Physics (China)
Shanghai Ctr. for Photovoltaics (China)
Xiaojing Zhu, Shanghai Institute of Technical Physics (China)
Yan Liang, Shanghai Ctr. for Photovoltaics (China)
Jinchun Jiang, Shanghai Ctr. for Photovoltaics (China)
Junhao Chu, Shanghai Institute of Technical Physics (China)
Shanghai Ctr. for Photovoltaics (China)


Published in SPIE Proceedings Vol. 9068:
Eighth International Conference on Thin Film Physics and Applications
Junhao Chu; Chunrui Wang, Editor(s)

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