有机无机复合钙钛矿太阳能电池由于高光电转化效率成为国际焦点，同时此类钙钛矿材料的量子点及其发光二极管（LED）因超高的荧光量子效率和简易可靠的制备过程而备受瞩目。然而量子点器件应用存在一个矛盾：（1）稳定且高荧光量子效率量子点外侧需要包覆一层长链小分子配体；（2）长链小分子配体的绝缘特性导致量子点间差的载流子传输从而限制了其LED器件性能的提升。不同于传统 “折中”处理这个矛盾的方式，申请者近期采用共轭胺基配体解决了量子点“稳定性”与“导电性”的矛盾。然而如何发展具有电子、空穴及双极性传输且稳定、高荧光量子效率的钙钛矿量子点是其高性能LED的关键之一。本项目研究和揭示共轭烯胺的有机配体对钙钛矿量子点形成动力学及稳定性、荧光量子效率影响的规律，发展系列具有双极传输特性的量子点,实现其LED中载流子平衡传输以及有效辐射复合，并通过界面修饰避免激子猝灭等效应,最终实现高效钙钛矿量子点发光二极管。

Organice-inorganic hybrid perovskite solar cells have attracted a lot of attention on itself due to the high photoelectric conversion efficiency of Organic-inorganic hybrid perovskite. Contemporaneously, attentions also been put on Organic-inorganic hybrid perovskite quantum dots(QDs) based light-emitting diodes (LEDs) , accounting for high fluorescence quantum efficiency and simple preparation process of organice-inorganic hybrid perovskite. However, there is a contradiction in the application of quantum dot devices: (1) stable and high fluorescence quantum efficiency quantum dots need to be coated with a long-chain ligand; (2) the insulating properties of long-chain ligands lead to poor carrier transfer in quantum dots films, limiting performance of relative LED devices. Different from the traditional "eclectic" treatment of this contradiction, we recently used conjugated amine ligands to solve the contradiction between "stability" and "conductivity" of quantum dots. However, how to develop stable, high fluorescence quantum efficiency perovskite quantum dots with electron and hole bipolar transport property is one of the keys to high-performance LEDs.This project will focus on the effect of organic ligands on the kinetics and stability of quantum dots of perovskite and the effect of fluorescence quantum efficiency. With development of a series of quantum dots with bipolar transmission characteristics, we can enables carrier-balanced transmission and effective radiation recombination in their LEDs. Finally, through the interface modification to avoid exciton annihilation and other effects, high-performance perovskite quantum dot light-emitting diodes could been achieved.