[9p-P12-1~18] 13.8 Optical properties and light-emitting devices

[9p-P12-5] Cu doping effects on optical and electronic properties of double perovskite semiconductors with Ag and In under high pressure

〇Ryotaro Shimoda¹, Takumi Horikoshi¹, Satoshi Nakano², Kiyoto Matsuishi¹ (1.Tsukuba Univ., 2.NIMS)

Keywords:

perovskite semiconductor,optical properties

Metal halide double perovskite semiconductors are attracting increasing attention due to their low toxicity and stability compared to lead-containing perovskite semiconductors. In this study, we focused on Cs₂AgInCl₆ and prepared single-crystal samples with added Cu to improve luminescence efficiency and control the bandgap. We investigated the structural and optical properties under high pressure. High-pressure luminescence measurements revealed that the addition of Cu caused the luminescence peak position to remain almost unchanged even under pressure.