Performance improvement of Sb2Se3 thin-film solar cells through ultraviolet ozone treatment

作     者：Jian-Min Wu Yan-Ping Lv Jin-Zeng Wang Liu Yang Fang Wang Hao Wu Xiao-Hong Xu Jian-Min Wu;Yan-Ping Lv;Jin-Zeng Wang;Liu Yang;Fang Wang;Hao Wu;Xiao-Hong Xu

作者机构：Key Laboratory of Magnetic Molecules and Magnetic Information MaterialsMinistry of EducationSchool of Chemistry and Materials ScienceShanxi Normal University 

出 版 物：《Rare Metals》 (稀有金属(英文版))

年 卷 期：2022年第41卷第8期

页      面：2671-2679页

核心收录：

学科分类：081702[工学-化学工艺] 07[理学] 070205[理学-凝聚态物理] 08[工学] 0817[工学-化学工程与技术] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 0703[理学-化学] 0702[理学-物理学] 

基　　金：financially supported by the National Natural Science Foundation of China (Nos.51871137 and 51971122) the National Key R&D Program of China (No. 2017YFB0405703) the Graduate Student Innovation Project in Shanxi Province (No.2019BY089) the Key Research and Development Projects of Linfen City (No.2027) 

主　　题：Thin-film solar cells CdS buffer layer Ultraviolet ozone treatment Sb 2 Se 3 

摘      要：Antimony selenide（Sb2Se3） is a promising photovoltaic thin-film absorber material that has been widely studied in recent years.In Sb2Se3thin-film solar cells,cadmium sulfide（CdS） is generally used for the fabrication of electron collection layers because of its high electron affinity,electronic mobility,and environmental stability.This study demonstrates the effects of ultraviolet ozone（UVO） treatment of chemical-bath-deposited CdS thin films on film crystallinity,surface morphology,and photoelectric properties.We find that UVO treatment not only enhances the crystallinity,transmittance,and conductivity of the CdS film,but it also decreases residual organic impurities on the CdS surface significantly,substantially improving the overall device performance.The efficiency of the superstrate CdS/Sb2Se3heterojunction solar cell reaches to 4.66%.This UVO treatment is a facile,low-cost,and fast process,which can be performed at room temperature.Our study demonstrates a good method for optimizing the performance of CdS/Sb2Se3solar cells and is expected to find wide applications in the future.