Composition engineering of Sb2S3 film enabling high performance solar cells

Yiwei Yin; Chunyan Wu; Rongfeng Tang; Chenhui Jiang; Guoshun Jiang; Weifeng Liu; Tao Chen; Changfei Zhu

doi:10.1016/j.scib.2018.12.013

Composition engineering of Sb₂S₃ film enabling high performance solar cells

Sci Bull (Beijing). 2019 Jan 30;64(2):136-141. doi: 10.1016/j.scib.2018.12.013. Epub 2018 Dec 15.

Authors

Yiwei Yin¹, Chunyan Wu¹, Rongfeng Tang¹, Chenhui Jiang¹, Guoshun Jiang¹, Weifeng Liu¹, Tao Chen², Changfei Zhu³

Affiliations

¹ CAS Key Laboratory of Materials for Energy Conversion, Department of Materials Science and Engineering, University of Science and Technology of China, Hefei 230026, China.
² CAS Key Laboratory of Materials for Energy Conversion, Department of Materials Science and Engineering, University of Science and Technology of China, Hefei 230026, China. Electronic address: tchenmse@ustc.edu.cn.
³ CAS Key Laboratory of Materials for Energy Conversion, Department of Materials Science and Engineering, University of Science and Technology of China, Hefei 230026, China. Electronic address: cfzhu@ustc.edu.cn.

PMID: 36659637
DOI: 10.1016/j.scib.2018.12.013

Abstract

Sb₂S₃ is a kind of stable light absorption materials with suitable band gap, promising for practical applications. Here we demonstrate that the engineering on the composition ratio enables significant improvement in the device performance. We found that the co-evaporation of sulfur or antimony with Sb₂S₃ is able to generate sulfur- or antimony-rich Sb₂S₃. This composition does not generate essential influence on the crystal structure, optical band and film formability, while the carrier concentration and transport dynamics are considerably changed. The device investigations show that sulfur-rich Sb₂S₃ film is favorable for efficient energy conversion, while antimony-rich Sb₂S₃ leads to greatly decreased device performance. With optimizations on the sulfur-rich Sb₂S₃ films, the final power conversion efficiency reaches 5.8%, which is the highest efficiency in thermal evaporation derived Sb₂S₃ solar cells.

Keywords: Co-evaporation; Power conversion efficiency; Sb(2)S(3); Solar cell; Thermal evaporation.