作为光电领域热点研究之一，钙钛矿材料因其高光学吸收系数、光生载流子的高迁移率和长寿命等光电特性而备受关注，但其优异光电性能的内部微结构根源及微观光电物理机制尚不清晰，影响钙钛矿材料光电应用的进一步开拓。基于此现状，本项目从钙钛矿材料的组分和结构本质出发，以典型铅卤化物钙钛矿为研究对象，利用自主设计搭建的双泵浦时间分辨光谱测量系统，对钙钛矿型微结构密切相关的动态无序效应进行全光学调控，通过测量不同动态无序效应对载流子微观动力学行为的超快作用，深入研究钙钛矿材料独特晶格特性对电子能带结构、载流子超快行为的光电作用机制。主要实验将在我们最近设计和搭建的双泵浦时间分辨光谱测量系统上完成。预期本工作将有助于我们对新型光电材料中动态无序效应及其超快光学过程和光电作用机制产生新认知，显著提升我们对钙钛矿新型光电材料微结构及宏观光电物理特性的理解，为钙钛矿材料及功能器件的创新发展提供一个扎实的研究基础。

As one of the most promising materials in the area of optoelectronics, perovskites have attracted intensive attentions owing to their amazing optoelectronic properties including high optical absorption coefficients, high mobility and long lifetime of photo-generated carriers. However, despite the excellent discoveries so far, the crystalline structural nature and the microscopic interacting mechanism behind the observed properties remain unclear, which certainly limits the further application development of perovskite materials. Based on the current status, our project plans to investigate the phenomenon of dynamic disorder which is essentially related to the soft lattice nature of perovskite structures, by the means of all-optical manipulation of dynamic disorders and time-resolved optical spectroscopies performed on our self-built double-pump time-resolved optical spectroscopic system. Our research will focus on studying the methods of selectively controlling different types of dynamic disorders by optical pulses, measuring the ultra-fast effects of dynamic disorders on the band structures and carrier dynamical processes in lead halide perovskites, and investigating the mechanisms of soft perovskite structure interacting with optoelectronic processes from a microscopic and dynamical point of view. The proposed research in the project will lead to new insight into the phenomenon of dynamic disorders in perovskites as well as its ultra-fast effects on transient optical processes and interacting mechanisms with carrier dynamics, which will promote our understanding of the effects of the microscopic lattice nature on the macroscopic optoelectronic performances and provide a solid research foundation for developing innovative materials and functional devices of perovskite structures.