DataVXACS Applied Materials & InterfacesPaper
journal article·2020-05-27

Improved Performance of Thermally Evaporated Sb2Se3 Thin-Film Solar Cells via Substrate-Cooling-Speed Control and Hydrogen-Sulfide Treatment

Shun Yao, Jinsong Wang, Jiang Cheng, Lijuan Fu, Fan Xie, Yongsong Zhang, Lu Li

ACS Applied Materials & Interfaces· Volume 12· Issue 21
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Source abstract

Abstract

Antimony selenide is a promising abundant absorber material for solar cells. However, current Sb2Se3 photovoltaic devices, which are fabricated via thermal evaporation, tend to have stoichiometric problems and show suboptimal performance. In this paper, we use a modified thermal evaporator to fabricate high-quality Sb2Se3 films. By dedicatedly cooling the substrate, we can improve both the Sb2Se3 morphology and the Sb2Se3/CdS heterojunction interface substantially. We find a suitable annealing atmosphere, H2S, which can largely compensate for possible deficiencies of Se and remove the antimony-oxide layer on the film surface. Thanks to cooling control and H2S treatment, we obtain a significantly improved efficiency (6.24%) for the Sb2Se3 solar cells. Our results indicate that this thermal evaporation technique is a promising approach to improve the large-scale fabrication of antimony chalcogenide solar cells.
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Research context

Electronic materialsMaterials processing

OpenAlex topics: Chalcogenide Semiconductor Thin Films · Quantum Dots Synthesis And Properties · Phase-change materials and chalcogenides

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Faculty of Materials and Energy, Southwestern University, Tiansheng Bridge, Beibei District, Chongqing, 400715, China

Chongqing Key Laboratory of Materials Surface and Interface Science, School of Material Science and Engineering, Chongqing University of Arts and Sciences, No. 319, Honghe Road, Yongchuan District, Chongqing 402160, P.R. China

Faculty of Materials Science and Technology, Kunming University of Science and Technology, Kunming, Yunnan 650093, China

Chongqing Key Laboratory of Materials Surface and Interface Science, Chongqing University Key Laboratory of Micro/Nano Materials Engineering and Technology, School of Material Science and Engineering, Chongqing University of Arts and Sciences, No. 319, Honghe Road, Yongchuan District, Chongqing 402160, P.R. China

Funding

Chongqing Science and Technology Commission · Chongqing Municipal Education Commission · Ministry of Science and Technology of the People's Republic of China · Department of Science and Technology of Sichuan Province · National Natural Science Foundation of China · Overseas Returnees Support Program for Innovation and Entrepreneurship of Chongqing

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