Issue 16, 2014

CuIn(S,Se)2 thin films prepared from a novel thioacetic acid-based solution and their photovoltaic application

Abstract

Low-cost and high-yield preparation of CuInSe2 films is the bottleneck for promising CuInSe2-based thin film solar cells. Here, we developed a simple, safe and cost-effective method using thioacetic acid to fabricate the absorber films of CuIn(S,Se)2 (CISSe). Dissolution of Cu2O and In(OH)3 in thioacetic acid was attributed to the strong coordination ability of S. The adhesive precursor solution can be prepared without any heating, centrifugation and inert gas protection, superior to the previously reported methods. The precursor CISSe layer was easily deposited in air by spin coating to ensure low cost. Uniform and compact CISSe thin films with well-crystallized and pure-phased CISSe grains were obtained after one step annealing. The as-prepared CISSe thin films were successfully applied to solar cells and a energy conversion efficiency of 6.75% was achieved. This facile preparation provides a low-cost and easy method to fabricate Cu-based thin film solar cells.

Graphical abstract: CuIn(S,Se)2 thin films prepared from a novel thioacetic acid-based solution and their photovoltaic application

Supplementary files

Article information

Article type
Paper
Submitted
06 Jan 2014
Accepted
25 Feb 2014
First published
25 Feb 2014

Phys. Chem. Chem. Phys., 2014,16, 7548-7554

CuIn(S,Se)2 thin films prepared from a novel thioacetic acid-based solution and their photovoltaic application

Y. Xie, Y. Liu, Y. Wang, X. Zhu, A. Li, L. Zhang, M. Qin, X. Lü and F. Huang, Phys. Chem. Chem. Phys., 2014, 16, 7548 DOI: 10.1039/C4CP00045E

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