Hydrazine processed Cu₂SnS₃ thin film and their application for photovoltaic devices

Jun HAN1, Ying ZHOU2, Yang Tian3, Ziheng HUANG4, Xiaohua WANG1(), Jie ZHONG2, Zhe XIA2, Bo YANG2, Haisheng SONG2, Jiang TANG2()

1. School of Science, Changchun University of Science and Technology, Changchun 130022, China; 2. Wuhan National Laboratory for Optoelectronics (WNLO), Huazhong University of Science and Technology, Wuhan 430074, China; 3. Department of Environmental Science, College of Environmental Sciences, Minzu University of China, Beijing 100081, China; 4. School of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan 430074, China

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Abstract

Copper tin sulfide (Cu₂SnS₃) was a potential earth abundant absorber material for photovoltaic device application. In this contribution, triclinic Cu₂SnS₃ film with phase pure composition and large grain size was fabricated from a hydrazine solution process using Cu, Sn and S as the precursors. Absorption measurement revealed this Cu₂SnS₃ film had a direct optical band gap of 0.88 eV, and Hall effect measurement indicated the film was p-type with hole mobility of 0.86 cm²/Vs. Finally Mo/Cu₂SnS₃/CdS/ZnO/AZO/Au was produced and the best device efficiency achieved was 0.78%. Also, this device showed improved device performance during ambient storage. This study laid some foundation for the further improvement of Cu₂SnS₃solar cell.

Cite this article:

Jun HAN,Ying ZHOU,Yang Tian, et al. Hydrazine processed Cu₂SnS₃ thin film and their application for photovoltaic devices[J]. Front Optoelec, 2014, 7(1): 37-45.