公开(公告)号：US12265299B1

公开(公告)日：2025-04-01

申请号：US17912746

申请日：2021-12-30

Applicant: SOOCHOW UNIVERSITY

Inventor： Qi Pan ,  Muhan Cao ,  Jie Fu ,  Jingjing Hu

IPC: G02F1/13357 ,  C09K11/02 ,  C09K11/66 ,  C09K11/88 ,  B82Y20/00 ,  B82Y40/00

Abstract: The invention provides a method for preparing a nanosized mixed crystal of cyanuric acid-coated halide perovskite, and use thereof. The method includes: (1) dispersing cesium halide, a lead salt, and urea in water, and stirring to obtain a mixed solution; and (2) adding phosphoric acid to the mixed solution, and subjecting to microwave heating, to obtain a solid after water is evaporated off, which is allowed to stand to obtain the nanosized mixed crystal of cyanuric acid coated halide perovskite. The method is simple, reproducible, and low in cost, with which mass production is achievable, and the emission wavelength of the obtained product is adjustable within a certain range through heat treatment. Due to the passivation and protection effects of cyanuric acid on halide perovskite, the prepared nanosized mixed crystal has excellent luminescence performance and stability, and is useful in the preparation of a high-color-point quantum dot brightness enhancement film.