title: 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.
authors.affiliation: CAS Key Laboratory of Materials for Energy Conversion, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, P.R. China. liuyf@mail.sic.ac.cn huangfq@mail.sic.ac.cn.
authors.forename: Yian
authors.initials: Y
authors.lastname: Xie
authors.forename: Yufeng
authors.initials: Y
authors.lastname: Liu
authors.forename: Yaoming
authors.initials: Y
authors.lastname: Wang
authors.forename: Xiaolong
authors.initials: X
authors.lastname: Zhu
authors.forename: Aimin
authors.initials: A
authors.lastname: Li
authors.forename: Lei
authors.initials: L
authors.lastname: Zhang
authors.forename: Mingsheng
authors.initials: M
authors.lastname: Qin
authors.forename: Xujie
authors.initials: X
authors.lastname: Lü
authors.forename: Fuqiang
authors.initials: F
authors.lastname: Huang