Co-Evaporated CuSbSe2 Thin Films for Solar Cells

作者：Wan, Lei^*; Xu, Guanglei; Jiao, Yufei; Zhang, Zishuo; Mao, Xiaoli; Niu, Haihong; Wang, Huan; Xu, Jinzhang; Wang, Xingzhu; Zhou, Ru^*; Xu, Baomin^*

来源：Energy Technology, 2024.

DOI：10.1002/ente.202400006

• absorber materials
• co-evaporations
• CuSbSe2
• solar cells

CuSbSe2 is a promising light-harvesting material for solar cells, which shows advantages including low melting point, low cost, and environmental friendliness, as well as excellent optoelectronic properties. In this work, a three-source co-evaporation method is employed to deposit CuSbSe2 thin films for the first time. Well-crystallized and pure-phase CuSbSe2 films are obtained through a two-stage co-evaporation, and the reaction mechanism of CuSbSe2 is revealed based on the phase evolution during film deposition process. It is also found that the growth atmosphere during the high-temperature stage of co-evaporation deposition exerts a significant impact on the phase, composition, crystallinity, and optoelectronic properties of CuSbSe2 films. Eventually, a Mo/CuSbSe2/CdS/ZnO:Al (AZO)/Ag-structured solar cell is successfully constructed, yielding a considerable power conversion efficiency of 1.83%.