低维全无机钙钛矿纳米晶的可控合成及激光行为研究

This project aims to synthesize high-quality low-dimensional inorganic perovskite nanocrystals and fabricate high-performance inorganic perovskite micro/nano laser. We focus on the study of synthesis methods, crystal phase, structure, tunable luminescence and some relational physical-chemical problems of low-dimensional inorganic perovskite nanocrystals. In order to obtain the low-dimensional inorganic perovskite nanocrystals with controllable morphology, low toxicity, good stability and high luminescent efficiency, the growth kinetics and physical-chemical properties of them will be explored and analyzed deeply. We pay attention to the basic application problems in preparation process and light amplification of inorganic perovskite micro/nano lasers. Meanwhile, the amplified spontaneous emission effect and transient physical processes of the optical gain in perovskite nanocrystals will be investigated. We also analyze the influence of composition, structure and morphology of perovskite nanocrystals on laser performance, and then establish the theoretical mechanism and physical model for high-performance and wavelength-tunable inorganic perovskite micro/nano lasers. The research of this project will help to enhance the understanding of material and physical problems in synthesis and luminescence of perovskite nanocrystals. The results of our study will provide theoretical guidance for the design of high-performance semiconductor lasers and technical support for other related industries like perovskite solar cells.

本项目以设计与合成高品质的低维全无机钙钛矿纳米晶，制作出高性能的全无机钙钛矿微纳激光器为目标。着重研究低维全无机钙钛矿纳米晶的合成方法、晶相与结构、发光可调等材料和物理问题，探索与分析全无机钙钛矿纳米晶的生长动力学过程和物理化学特性，以期获得形貌可控、毒性低、稳定性好和发光效率高的低维全无机钙钛矿纳米晶。研究全无机钙钛矿微纳激光器的制备工艺、光放大等应用基础问题，探索钙钛矿纳米晶的放大自发辐射效应及产生光学增益的瞬态物理过程，分析钙钛矿纳米晶的组分、结构、形貌等参数与激光性能的影响关系，建立高性能、波段可调全无机钙钛矿微纳激光器的理论机制和物理模型。本项目的研究将有助于加深人们对钙钛矿纳米晶合成和发光过程中若干材料与物理问题的理解，为设计高性能半导体激光器提供理论指导，也可为钙钛矿太阳能电池等相关产业提供技术支持。

本项目以设计与合成高品质的低维全无机钙钛矿纳米晶，制作出高性能的全无机钙钛矿微纳激光器为目标。着重研究低维全无机钙钛矿纳米晶的合成方法、晶相与结构、发光可调等材料和物理问题，探索与分析全无机钙钛矿纳米晶的生长动力学过程和物理化学特性，以期获得形貌可控、毒性低、稳定性好和发光效率高的低维全无机钙钛矿纳米晶。研究全无机钙钛矿微纳激光器的制备工艺、光放大等应用基础问题，探索钙钛矿纳米晶的放大自发辐射效应及产生光学增益的瞬态物理过程，分析钙钛矿纳米晶的组分、结构、形貌等参数与激光性能的影响关系，建立高性能、波段可调全无机钙钛矿微纳激光器的理论机制和物理模型。本项目的研究将有助于加深人们对钙钛矿纳米晶合成和发光过程中若干材料与物理问题的理解，为设计高性能半导体激光器提供理论指导，也可为钙钛矿太阳能电池等相关产业提供技术支持。