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Recently, Professor Xing Jun, a young Taishan scholar from Qingdao University of Science and Technology, and Nanjing University and Jilin University have made new progress in the field of fluorescent materials
.
The research team developed a halogen atom substitution strategy to construct a new type of white light perovskite material
.
The photoluminescence quantum yield of the white perovskite is 32%, the color rendering index is close to 90, and the chromaticity coordinates are close to standard white light
White light perovskite materials are mainly used for solid-state lighting and are the luminescent materials used in LED lights
.
The commonly used traditional white light materials for LED lights are made of a composite of two or more materials, which will turn yellow after long-term use
Low-dimensional organic-inorganic hybrid perovskite materials are used as white light emitters, and their broadband white light emission comes from self-trapped excitons
.
Since the formation mechanism of self-limited domains in perovskite materials is not clear, the preparation of new white light-emitting perovskites mainly depends on screening a large number of organic molecules
