Influence of CdS films synthesized by different methods on the photovoltaic performance of CdTe/CdS thin film solar cells**Project supported by Natural Science Foundation of Shandong Province, China (Grant No. ZR2019QF018), National Natural Science Foundation of China (Grant Nos. 61904098 and 11904209), and Natural Science Foundation of Heilongjiang Province of China (Grant No. 2017001).

Abstract

The cadmium sulphide (CdS) film is grown on cadmium telluride (CdTe) nanorods (NRs) arrays by different methods such as chemical bath deposition (CBD), magnetron sputtering (MS), and homogenous precipitation (HP) techniques. The impact of various deposition methods is explored in detail on the growth of CdTe/CdS composite film, the CdTe/CdS interface property, and solar cell efficiency. Compared to the CBD and HP methods, the MS method can improve the growth of the CdS on CdTe NRs with high crystalline quality. The device based on the CdS film prepared by the MS method demonstrates excellent photovoltaic performance, which has the potential for applications in solar cells.