Ma Xinqiang, Fan Shengying, Yang Wenwen, Wei Jiajie, Wang Xiaolei, Ni Jincheng, Cheng Wei, Zhang Qinhe
Key Laboratory of High Efficiency and Clean Mechanical Manufacture of Ministry of Education, School of Mechanical Engineering, Shandong University, 17923 Jingshi Rd., Jinan 250061, China.
Laser Institute, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250104, China.
Micromachines (Basel). 2024 Sep 13;15(9):1150. doi: 10.3390/mi15091150.
Perovskite as an emerging semiconductor luminescent material has attracted widespread attention due to its simple preparation, high luminescence quantum yield, high color purity, tunable spectrum, and ability to cover the entire visible light band. However, due to the influence of water or other highly polar solvents, oxygen, temperature, and radiation, perovskite nanocrystals will aggregate or collapse in the lattice, eventually leading to luminescence quenching. This study starts from the postprocessing of perovskite, uses methyl methacrylate as the monomer and TPO as the photoinitiator, and encapsulates the perovskite powder prepared by the hot injection method through ultraviolet light initiation. A method is proposed to improve the luminescence and crystal structure stability of perovskite. By eliminating the influence of environmental factors on perovskite nanocrystals through the dense structure formed by organic polymers, the resistance of perovskite to strong polar solvents such as water will be greatly improved, and it has great potential in the protection of perovskite. Finally, by changing the proportion of halogen elements in the perovskite resin to change the color of the luminescent resin, a fluorescent coating emitting light in all visible light bands is prepared. Fluorescent coatings are widely used in life and industry fields such as plastics, sol, and paper.
钙钛矿作为一种新兴的半导体发光材料，因其制备简单、发光量子产率高、色纯度高、光谱可调以及能够覆盖整个可见光波段而受到广泛关注。然而，由于水或其他高极性溶剂、氧气、温度和辐射的影响，钙钛矿纳米晶体会在晶格中聚集或坍塌，最终导致发光猝灭。本研究从钙钛矿的后处理出发，以甲基丙烯酸甲酯为单体、TPO为光引发剂，通过紫外光引发对热注射法制备的钙钛矿粉末进行封装。提出了一种提高钙钛矿发光性能和晶体结构稳定性的方法。通过有机聚合物形成的致密结构消除环境因素对钙钛矿纳米晶体的影响，钙钛矿对水等强极性溶剂的耐受性将大大提高，在钙钛矿保护方面具有巨大潜力。最后，通过改变钙钛矿树脂中卤素元素的比例来改变发光树脂的颜色，制备出在所有可见光波段发光的荧光涂料。荧光涂料广泛应用于塑料、溶胶和纸张等生活和工业领域。
