期刊
THIN SOLID FILMS
卷 519, 期 21, 页码 7412-7415出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.tsf.2010.12.166
关键词
Cu2ZnSnS4; CZTS; Cu2SnS3; Cu-Sn-S; Thin films; Real-time XRD; Formation reaction
The quaternary compound kesterite Cu2ZnSnS4 (CZTS) is a promising candidate for the production of low-cost thin film solar cells. Depending on the precursor composition and deposition technique several intermetallic precursor phases may appear, affecting the formation reactions during the crystallization process of the thin film absorber. A better understanding of these formation reactions in the system Cu-Zn-Sn-S is required for the optimization of CZTS absorbers and future development of solar modules. The crystallization of CZTS is completed by the reaction of Cu2SnS3 and ZnS. The formation of Cu2SnS3 itself depends on the different available precursor compounds after sulfur evaporation. Incomplete conversion of binary sulfides during annealing may lead to the formation of undesirable compounds, i.e. the transformation of Cu2SnS3 into Cu4SnS4 via reaction with Cu2-xS, which affect or even inhibit the crystallization of CZTS. Therefore a precise knowledge about formation reactions of binary and ternary Cu-Sn sulfides during annealing at low temperatures is important to crystallize a monophase CZTS absorber. Real-time investigations on the formation reactions in the quaternary and also the ternary subsystems of Cu-Zn-Sn-S while annealing stacked elemental layers elucidate the reaction paths of binary and ternary sulfides. We report on results of time-resolved and angle-dispersive XRD experiments during annealing comparing the formation reactions in sulfurized Cu-Sn precursors prepared by different deposition techniques. (C) 2010 Elsevier B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据