[7p-P09-1~9] 12.8 Specific theme: Photoelectric Properties, Device Fabrication and Structural Controls of Organic-Inorganic Hybrid Perovskites

[7p-P09-7] Structures and optical properties of Te-based organic-inorganic hybrid vacancy-ordered double perovskite semiconductors under high pressure

〇Daisuke Oka¹, Satoshi Nakano², Kiyoto Matsuishi¹ (1.Tsukuba Univ., 2.NIMS)

Keywords:

perovskite semiconductor,solar cell materials

Organic-inorganic hybrid vacancy-ordered double perovskite semiconductors are expected to be applied to solar cells as Pb-free materials. In this study, we applied pressure to vacancy-ordered double perovskites (MA₂TeBr₆ and FA₂TeBr₆) to investigate the effects of rotation and orientation changes of organic molecules on their structural and optical properties, and found that FA₂TeBr₆ has stronger bonds, less shrinkage, and no difference in band gap.