DataVXAdvanced Functional MaterialsPaper
journal article·2023-03Open access

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· Volume 33· Issue 11
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Source abstract

Abstract

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 realized. The single‐layer CZTSSe absorber exhibits reduced carrier recombination, enhanced carrier density and increased work function. The improved back contact and absorber layer enables 11.1% power‐conversion‐efficiency to be achieved.
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Research context

OpenAlex topics: Chalcogenide Semiconductor Thin Films · Quantum Dots Synthesis And Properties · Copper-based nanomaterials and applications

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

Affiliations

ARC Centre of Excellence in Exciton Science School of Chemistry University of Melbourne Victoria 3010 Australia

School of Metallurgy and Environment Central South University Changsha 410083 China

Shenzhen Key Laboratory of Advanced Thin Films and Applications College of Physics and Optoelectronic Engineering Shenzhen University Shenzhen 518060 China

International Academy of Optoelectronics at Zhaoqing South China Normal University Zhaoqing Guangdong 526238 China

Xinjiang Technical Institute of Physics and Chemistry Chinese Academy of Sciences Urumqi 830011 China

Leibniz‐Institut für Polymerforschung Dresden e.V. Institute of Physical Chemistry and Polymer Physics 01069 Dresden Germany

Chongqing Institute of Green and Intelligent Technology Chinese Academy of Sciences Chongqing 400714 China

Funding

National Key Research and Development Program of China

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