高压下金属卤素钙钛矿的结构和性质演化研究进展

Recent Progress on Structural and Functional Evolutions of Metal Halide Perovskites under High Pressure

过去10年里,金属卤素钙钛矿作为一种性能优异的新型功能材料被广泛应用,其研究取得了很多重要进展。压力作为一个基本的热力学变量,可以显著地影响材料的微观结构、原子间相互作用、电子轨道和化学键,是调节材料结构和性能的一个强大工具。与此同时,压力也为研究结构与性质之间的关系提供了新路径。结合金刚石对顶砧高压装置以及原位高压表征技术,总结了金属卤素钙钛矿在高压下的结构及性质变化,包括高压驱动结构相变,有序-无序转变,非晶化,局部结构演化,带隙、光致发光、光响应、电阻等性质在压力作用下的变化,以及高压下特有的奇特性质如金属化转变,系统分析了此类材料的结构-性质关系,并对未来的新型材料设计做出了展望。

Over the past decade,metal halide perovskites have been widely employed as the emerging active-materials for technological innovations,and their research has become one of the central goals in the field of energetic materials.Pressure,a new thermodynamic dimension,can tune microstructure,atomic interactions,electronic orbitals,and chemical bonds of materials,thus serves as a potent means to regulate the structures and properties of metal halide perovskites.In addition,pressure paves a novel avenue for probing and understanding the structure-property relationship.Taking the advantage of diamond anvil cell technology and in situ high-pressure characterization techniques,we have comprehensively summarized the pressure-induced evolutions of metal halide perovskites,encompassing structural phase transitions,orderdisorder transitions,amorphization,and local structural evolution.We have examined alterations in properties,such as bandgap,photoluminescence,photoelectronic response,and electrical resistance,and other distinctive high-pressure phenomena.This review systematically analyzes the structure-property interplay within these known materials,and offers insights into the design of future novel materials.