[18a-M_101-1~9] 12.8 Specific theme: Photoelectric Properties, Device Fabrication and Structural Controls of Organic-Inorganic Hybrid Perovskites

10:30 AM - 10:45 AM JST(1:30 AM - 1:45 AM UTC)Presentation by Applicant for JSAP Young Scientists Presentation Award

[18a-M_101-3] In situ RHEED observation of vacuum co-evaporated CsPbBr₃ thin films on mica substrates

〇Yutaro Banguchi¹, Masato Sotome¹, Takashi Kondo^1,2 (1.U-Tokyo, 2.RCAST U-Tokyo)

Keywords:

perovskite semiconductor,vacuum evaporation,RHEED

In situ observation of thin-film growth during the vacuum co-evaporation process of the all-inorganic metal halide perovskite CsPbBr₃ was performed using reflection high-energy electron diffraction (RHEED). Spot-like patterns indicative of island growth and streak-like patterns corresponding to quasi-2D growth were observed. Post-growth atomic force microscopy (AFM) revealed rod-like structures with in-plane orientation. Furthermore, analysis of the lattice constants derived from the RHEED patterns suggests in-plane oriented growth of CsPbBr₃.