[19p-C302-1~13] 12.5 Organic and hybrid solar cells

2:45 PM - 3:00 PM JST(5:45 AM - 6:00 AM UTC)English Presentation

[19p-C302-6] Vapor phase deposition of tin halide perovskite CsSnBr₃ on muscovite mica substrates

〇(D)Zihao Liu¹, Hanbo Jung¹, Yemu Yang¹, Masato Sotome², Takashi Kondo^1,2 (1.School of Eng., Univ. of Tokyo, 2.RCAST, Univ. of Tokyo)

Keywords:

perovskite,vapor phase deposition,epitaxy

Tin halide perovskites have attracted much research interest as an alternative to lead-based perovskites. Among them, CsSnBr₃ with a band gap of 1.8 eV and high stability shows great potential for various applications. Current research focuses mainly on solution-processed polycrystalline thin films. In this study, we explored the possibility of epitaxial CsSnBr₃ on muscovite mica substrates by co-evaporation of CsBr and SnBr₂. In contrast to the CsSnBr₃ thin films grown at 30°C with small randomly oriented grains, (110) oriented thin films with enhanced absorption were obtained at a substrate temperature of 300°C on mica with large grains due to the higher surface diffusivity of the adatoms. Detailed properties of the CsSnBr₃ thin film will be discussed.