Carrier management through electrode and electron-selective layer engineering for 10.70% efficiency antimony selenosulfide solar cells

Jiabin Dong, Qianqian Gao, Li Wu, Junjie Yang, Huizhen Liu, Weihuang Wang, Rongfeng Tang, Jianyu Li, Zixiu Cao, Yue Liu, Han Xu, Pan Zhang, Rutao Meng, Jianpeng Li, Xuejun Xu, Zijun Zhang, Tianchi Li, Tao Chen (), Shengzhong ‘Frank’ Liu () and Yi Zhang ()
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Jiabin Dong: Nankai University
Qianqian Gao: Nankai University
Li Wu: Nankai University
Junjie Yang: University of Science and Technology of China
Huizhen Liu: Nankai University
Weihuang Wang: Fuzhou University
Rongfeng Tang: University of Science and Technology of China
Jianyu Li: University of Science and Technology of China
Zixiu Cao: Nankai University
Yue Liu: Nankai University
Han Xu: Nankai University
Pan Zhang: Nankai University
Rutao Meng: Nankai University
Jianpeng Li: Nankai University
Xuejun Xu: Nankai University
Zijun Zhang: Nankai University
Tianchi Li: Nankai University
Tao Chen: University of Science and Technology of China
Shengzhong ‘Frank’ Liu: Chinese Academy of Sciences
Yi Zhang: Nankai University

Nature Energy, 2025, vol. 10, issue 7, 857-868

Abstract: Abstract Antimony selenosulfide (Sb2(S,Se)3) solar cells suffer from charge carrier loss, which has limited the power conversion efficiency to around 10%. Here we develop a charge carrier management strategy using a textured fluorine-doped tin oxide substrate as the front contact to enhance light scattering and maximize charge generation. To overcome voids and shunt paths introduced by the textured surface, we insert a SnO2 layer by atomic layer deposition at the textured fluorine-doped tin oxide/CdS interface. This results in a conformal deposition of CdS and an optimal bandgap profile in the Sb2(S,Se)3 absorber, which improves charge transport and lowers charge recombination at the interface and in the bulk, respectively. We achieve a certified efficiency of 10.70% sodium selenosulfate-based Sb2(S,Se)3 solar cells with excellent stability. We prove the generality of the method demonstrating selenourea-based Sb2(S,Se)3 and upscaling the solar cells to 1 cm2. The results represent a step forward in the development of antimony-based solar cells.

Date: 2025
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DOI: 10.1038/s41560-025-01792-y

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