Hydrazine processed Cu2SnS3 thin film and their application for photovoltaic devices

Jun HAN; Ying ZHOU; Yang Tian; Ziheng HUANG; Xiaohua WANG; Jie ZHONG; Zhe XIA; Bo YANG; Haisheng SONG; Jiang TANG

doi:10.1007/s12200-014-0389-3

Front. Optoelectron. ›› 2014, Vol. 7 ›› Issue (1) : 37 -45. DOI: 10.1007/s12200-014-0389-3

RESEARCH ARTICLE

Hydrazine processed Cu₂SnS₃ thin film and their application for photovoltaic devices

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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 Cu₂SnS₃ solar cell.

Keywords

copper tin sulfide (Cu₂SnS₃) / solar cell / hydrazine / solution process / triclinic

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Jun HAN,Ying ZHOU,Yang Tian,Ziheng HUANG,Xiaohua WANG,Jie ZHONG,Zhe XIA,Bo YANG,Haisheng SONG,Jiang TANG. Hydrazine processed Cu₂SnS₃ thin film and their application for photovoltaic devices. Front. Optoelectron., 2014, 7(1): 37-45 DOI:10.1007/s12200-014-0389-3