Journal article
CuSCN Modified Back Contacts for High Performance CZTSSe solar cells
Yixiong Ji, Xiangyun Zhao, Yining Pan, Zhenghua Su, Jinhong Lin, Eser Metin Akinoglu, Yang Xu, Heyou Zhang, Pengjun Zhao, Yue Dong, Xingzhan Wei, Fangyang Liu, Paul Mulvaney
Advanced Functional Materials | Wiley | Published : 2023
Abstract
Optimization of the back contact interface is crucial for improving the performance of Cu2ZnSnS4 (CZTS) thin film solar cells. In this paper, self-depleted CuSCN is deployed as an intermediate layer at the Mo/CZTS interface to improve the quality of the back contact. This CuSCN layer, obtained via aqueous solution processing, reduces the thickness of Mo(S,Se)2 and eliminates multi-layer crystallization of the absorber by suppressing the undesirable reaction between Mo and Se during the selenization process. By regulating the selenium infiltration into the CZTS precursor films during the selenization process, highly crystalline, single-layer Cu2ZnSn(S,Se)4 (CZTSSe) absorber layers are realize..
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Awarded by Guangdong Innovative and Entrepreneurial Research Team Program
Funding Acknowledgements
Y.J. and X.Z. contributed equally to this work. This work was funded by the National Key Research and Development Program of China (2018YFE0203400), the ARC Centre of Excellence in Exciton Science through ARC Grant CE170100026, and by the Guangdong Innovative and Entrepreneurial Team Program (No. 2016ZT06C517). The authors acknowledge support from DISR through the Australia-China Science Research Fund (Grant ACSRIII000001). Y.J. would like to thank Dr. Wei Yao from the University of Electronic Science and Technology of China for Raman measurements.