Controlled Sputtering Pressure on High-Quality Sb2Se3 Thin Film for Substrate Configurated Solar Cells

Rong Tang (1) , Xingye Chen (1) , Yandi Luo (1) , Zihang Chen (1) , Yike Liu (2) , Yingfen Li (2) , Zhenghua Su (1) , Xianghua Zhang (3) , Ping Fan (4) , Guangxing Liang (1)

1 Shenzhen University [Shenzhen]
2 Guizhou Institute of Technology
3 ISCR - Institut des Sciences Chimiques de Rennes
4 Shenzhen University

Magnetron sputtering has become an effective method in Sb2Se3 thin film photovoltaic. Research found that post-selenization treatments are essential to produce stoichiometric thin films with desired crystallinity and orientation for the sputtered Sb2Se3. However, the influence of the sputtering process on Sb2Se3 device performance has rarely been explored. In this work, the working pressure effect was thoroughly studied for the sputtered Sb2Se3 thin film solar cells. High-quality Sb2Se3 thin film was obtained when a bilayer structure was applied by sputtering the film at a high (1.5 Pa) and a low working pressure (1.0 Pa) subsequently. Such bilayer structure was found to be beneficial for both crystallization and preferred orientation of the Sb2Se3 thin film. Lastly, an interesting power conversion efficiency (PCE) of 5.5% was obtained for the champion device.

Keywords: thin film solar cell; Sb2Se3; magnetron sputtering; working pressure; post-selenization; substrate configuration

Domains: Chemical Sciences

Rong Tang, Xingye Chen, Yandi Luo, Zihang Chen, Yike Liu, et al.. Controlled Sputtering Pressure on High-Quality Sb2Se3 Thin Film for Substrate Configurated Solar Cells. Nanomaterials, 2020, 10 (3), ⟨10.3390/nano10030574⟩. ⟨hal-02562368⟩