Korean Institute of Surface Engineering

pISSN : 1225-8024 | eISSN : 3399-8403


한국표면공학회지 (52권6호 334-341)

Optical Properties of Metal Halide Perovskite Nanocrystals with Addition of Metal Bromide

금속 브롬화물의 첨가에 따른 금속 할라이드 페로브스카이트 나노결정의 광학적 특성 변화

Yun, Seokjin;Choi, Jihoon;

충남대학교 신소재공학과;
Department of Materials Science and Engineering, Chungnam National University;

DOI : 10.5695/JKISE.2019.52.6.334


Organometal halide perovskite materials have attracted much attention in the photovoltaic and light emitting devices due to the compositional flexibility with AMX3 formula (A is an organic amine cation; M is a metal ion; X is a halogen atom). The addition of homovalent or heterovalent metal cations to the bulk organohalide perovskites has been performed to modify their energy band structure and the relevant optoelectronic properties by ligand-assisted ball milling. Here, we report CH3NH3Pb1-xMxBr3 nanocrystals substituted by metallic cations (M is Sn2+, In3+, Bi3+; x = 0, 0.01, 0.02, 0.05, 0.1, 0.2). Photoluminescence and quantum yield was significantly reduced with increasing metallic cations content. These quenching effect could be resulted from the metal cations that behave as a non-radiative recombination center.


Metal halide perovskite;Ball milling;Metallic cation substitution;Optical properties;