聚合物空间限域作用下喷墨打印钙钛矿量子点原位晶化生长机制与发光阵列器件性能研究

金属卤化物钙钛矿量子点具有高荧光发射效率、发光光谱连续可调、发光色纯度高等优异发光性能，因此面向未来发光显示产业高分辨、高画质的发展需求，研究钙钛矿量子点新型精细图案化发光器件技术具有显著的学术意义和应用价值。本项目采用喷墨打印技术实现导电聚合物基质中钙钛矿量子点原位制备，系统研究导电聚合物基质空间限域与温度热场协同作用下钙钛矿量子点的晶化生长模型，探明钙钛矿量子点晶体结构演变的调控机制；深入研究钙钛矿量子点的发光机理，构建量子点微观结构与发光特性之间的有机联系，掌握通过改变喷墨打印参数调控量子点发光性能的新途径；在此基础上设计和制备精细钙钛矿量子点发光二极管阵列，探索器件中的载流子输运行为，掌握钙钛矿量子点发光阵列的均匀性和发光效率调控策略。研究结果将为理解新型钙钛矿量子点原位晶化生长机制，获取高精度钙钛矿量子点图案化电致发光技术提供理论和实验依据。

Metal halide perovskite quantum dots have superior fluorescent properties such as high light-emitting efficiency, tunable emission wavelength, high color purity, and so on. Because of the request for high resolution and high image quality of display industry, the investigation of novel elaborate patterning luminescent technology for perovskite quantum dots has a great academic significance and application value. In this proposal, in situ preparation of perovskite quantum dots in conducting polymer matrix is realized with inkjet printing technique. The crystallization model of perovskite quantum dots under the synergistic effect of thermal treatment and polymer spacial confinement is studied in detail. The regulation mechanism of inkjet printing on the evolution of perovskite quantum dot crystal structure is explored. The fluorescent mechanism of perovskite quantum dot is investigated in detail. And the relationship between the light-emitting properties and microstructure of the quantum dots is established. A new route for controlling the quantum dot light-emitting properties by varying the inkjet printing parameters will be obtained. Based on the above studies, elaborate perovskite quantum dot fluorescent electroluminescent array is designed and fabricated. The carrier transport behavior in the devices is explored, and the strategy of controlling the perovskite quantum dot fluorescent uniformity and efficiency will be achieved. The results will provide theoretical and experimental bases for the understanding of insitu crystallization mechanism of novel perovskite quantum dots, and the realization of high precision perovskite quantum dot electroluminescent technology.