期刊
APPLIED PHYSICS LETTERS
卷 118, 期 17, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/5.0030430
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资金
- National Natural Science Foundation of China [61725401, 61904058]
- Fundamental Research Funds for the Central Universities [2021XXJS028]
- National Postdoctoral Program for Innovative Talent [BX20190127]
- China Postdoctoral Science Foundation Project [2019M662623]
- National Key R&D Program of China [2016YFA0204000]
- Graduates' Innovation Fund of Huazhong University of Science and Technology [2020yjsCXCY003]
By applying ZnxCd1-xS to tune the interface band alignment between CdS and Sb2Se3, the efficiency of Sb2Se3 thin-film solar cells can be significantly improved.
Sb2Se3 has drawn wide attention in thin-film solar cells in recent years because of its advantages of low-cost, low-toxic, and physicochemically stable properties. The most efficient Sb2Se3 solar cells are based on a CdS/Sb2Se3 heterojunction, but the cliff-like conduction band offset at the CdS/Sb2Se3 interface causes detrimental interface recombination. In this Letter, we apply the ZnxCd1-xS to tune the interface band alignment. When x is equal to 0.163, the flatband results in an optimal efficiency of 7.02%, which is absolutely 0.6% higher than the control device with pure CdS.
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