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- Title
Solvent Annealing Enabling Reconstruction of Cadmium Sulfide Film for Improved Heterojunction Quality and Photovoltaic Performance of Antimony Selenosulfide Solar Cells.
- Authors
Gu, Yuehao; Liang, Wenhao; Che, Yixuan; Cai, Zhiyuan; Xiao, Peng; Yang, Junjie; Zang, Runxuan; Wang, Hong; Wu, Xiaojun; Chen, Tao
- Abstract
Antimony selenosulfide, Sb2(S,Se)3, has been considered as new‐generation light‐harvesting material for high‐efficiency photovoltaic applications due to its adjustable bandgap, high absorption coefficient, and excellent stability. In terms of device operation, the electron transfer from the electron transporting layer to Sb2(S,Se)3 layer plays a critical role in improving the photovoltaic energy conversion efficiency of solar devices. Intricately manipulating the surface and interface properties has been a great challenge in solar cell fabrications. Herein, an effective approach toward the reconstruction of the CdS interfacial layer, and the following Sb2(S,Se)3 absorber film by utilizing polar ethylenediamine (EDA) solvent annealing at room temperature is developed. It is found that the presence of nitrogen‐containing functional groups of EDA on the CdS surface not only promotes the grain growth and crystallization of CdS, but also induces optimized deposition of Sb2(S,Se)3 films in terms of interfacial contact and defect formation. Finally, the Sb2(S,Se)3 solar cell based on EDA–CdS achieves a top efficiency of 10.10%. This study provides an efficient method and a new understanding of chemically healing inorganic thin films.
- Subjects
UNITED States. Economic Development Administration; SOLAR cells; PHOTOVOLTAIC power generation; CADMIUM sulfide; SOLAR cell manufacturing; ANTIMONY
- Publication
Advanced Functional Materials, 2024, Vol 34, Issue 12, p1
- ISSN
1616-301X
- Publication type
Article
- DOI
10.1002/adfm.202311577