[17a-PA03-1~24] 12.3 Functional Materials and Novel Devices

[17a-PA03-4] Perovskite Quantum Dots with High Photoluminescence Quantum Yield through Engineering of Halogen Composition and Quantum Size Effect

〇(M2)Naoaki Oshita¹, Satoshi Asakura², Akito Masuhara^1,3 (1.Grad. Sch. of Sci. and Eng., Yamagata Univ., 2.Ise Chem. Corp., 3.FROM, Yamagata Univ.)

Keywords:Perovskite, Quantum Dot, High photoluminescence quantum yield

Perovskite quantum dots (PeQDs) show PL-spectrum adjustability upon mixing halide anions. However, Br and I mixed-type PeQDs often exhibit low photoluminescence quantum yield (PLQY) in the wavelength range of 585~610 nm due to numerous structural defects arising from the ratio of halogen compositions. In this study, we have successfully synthesized PeQDs with high PLQY through band gap engineering that combines both halogen composition control and quantum size effects.