电沉积制备太阳能电池吸收层铜锌锡硫薄膜  

Preparation of Cu_2ZnSnS_4 Thin Films as Solar Cell Absorption Layer Material by Electrodeposition

作　　者：杨雪莹 李丽波[1] 徐妍[1] 高冠雄 裴蕾[1] YANG Xueying;LI Libo;XU Yan;GAO Guanxiong;PEI Lei(Key Laboratory of Green Chemical Engineering and Technology of College of Heilongjiang Province,School of Chemical and Environmental Engineering,Harbin University of Science and Technology,Harbin 150040,China)

机构地区：[1]哈尔滨理工大学化学与环境工程学院绿色化工技术黑龙江省高校重点实验室,黑龙江哈尔滨150040

出　　处：《电镀与环保》2018年第4期11-15,共5页Electroplating & Pollution Control

基　　金：黑龙江省教育厅科学技术研究项目(项目号11541067)

摘　　要：以硫酸铜、硫酸锌、硫酸亚锡、硫代硫酸钠、柠檬酸钠为电解质,采用电沉积法在FTO导电玻璃上制备Cu/Zn/Sn/S前驱物,热处理后获得铜锌锡硫(Cu_2ZnSnS_4,CZTS)薄膜。通过单因素试验优化了镀液组成、pH值、沉积电位、沉积时间,得到了最佳的CZTS薄膜,其结晶性好,禁带宽度为1.55eV。它与ZnO缓冲层组装太阳能电池,光电转换效率最高为1.5×10^(-2)%。Cu/Zn/Sn/S precursor was prepared on FTO conductive glass by electrodeposition in the electrolyte solution including copper sulfate, zinc sulfate, sulfite tin, sodium thiosulfate and citrate sodium, and then CZTS thin film was obtained after heat treatment of the precursor. The composition and pH value of solution, deposition potential and deposition time were optimized by single factor experiment, and the best CZTS thin film was obtained which has good crystalline and its energy bandgap was 1. 55 eV. CZTS thin film was assembled with ZnO buffer layer as solar cell with the highest photoelectric conversion efficiency of 1.5 × 10^-2 %.

关 键 词：电沉积 Cu2ZnSnS4薄膜 太阳能电池 

分 类 号：TQ153[化学工程—电化学工业]