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[19p-P04-41]Fabrication and evaluation of double heterostructure of perovskite semiconductors

〇(M2)Shohei Toyota¹, Zihao Liu¹, Masato Sotome², Tomonori Matsushita², Takashi Kondo^1,2 (1.Univ. of Tokyo School of Eng., 2.RCAST Univ. of Tokyo)

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Keywords:

perovskite semiconductors

Recently, metal halide perovskites (ABX3) have attracted much attention as materials for optoelectronic devices due to their broad bandgap tunability by composition control and long optical carrier lifetime. We have previously reported that B-site substituted heterostructures (CsPbBr3/ CsSnBr3 and CsSnBr3/ CsPbBr3) are stable for a long time. In this study, we fabricated a double heterostructure of CsPbBr3/ CsSnBr3/ CsPbBr3 and evaluated its crystallinity, optical and luminescence properties. We also discuss the surface morphology (AFM) and compositional distribution (XPS) of the double heterostructure.

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