手性金属卤化物钙钛矿的设计合成及其圆偏振发光研究进展

Research progress in design and synthesis of chiral metal halide perovskites and their circular polarization luminescence

近年来,有机-无机杂化金属卤化物钙钛矿因其出色的光电性能成为最具吸引力的半导体材料之一,通过将“手性”分子引入到金属卤化物钙钛矿晶体材料中就可以得到“手性金属卤化物钙钛矿”.手性金属卤化物钙钛矿结合了钙钛矿的优良光电性质和手性特征,故产生了圆二色性(CD)、圆偏振发光(CPL)、非线性光学(NLO)、自旋电子学、铁电性和手性诱导自旋选择性(CISS)效应等独特光电功能的可能性,在光电子学、光学材料、光伏材料和自旋电子学等领域具有广阔的应用前景.本文综述了近年来手性金属卤化物钙钛矿的研究发展情况,如制备方法、晶体结构、手性产生机理、圆偏振发光和圆偏振光检测等;此外,总结了该类材料发展过程中所面临的挑战并展望了其发展前景.这对了解手性金属卤化物钙钛矿的光电性质和构建策略具有重要的理论意义,并为开发设计新型的手性金属卤化物钙钛矿提供了思路.

In recent years, the organic-inorganic hybrid metal halide perovskite has become one of the most attractive semiconductor materials due to its excellent optoelectronic properties. By introducing “chiral” molecules into metal halide perovskite crystal materials, “chiral metal halide perovskites” can be obtained. Chiral perovskites combine the excellent optoelectronic properties and chiral features of perovskites, resulting in unique optoelectronic functions such as circular dichroism(CD), circularly polarized luminescence(CPL), nonlinear optical(NLO) properties, spintronics,ferroelectricity, and chiral induced spin selectivity(CISS) effects. They have broad application prospects in fields such as optoelectronics, optical materials, photovoltaic materials and spintronics. This article reviews the research and development of chiral metal halide perovskites in recent years, including preparation methods, crystal structure, chiral generation mechanism, circularly polarized luminescence and circularly polarized light detection. In addition, the challenges in its development and research process were summarized, and its future development prospects were discussed. This has important theoretical significance for understanding the photoelectric properties and construction strategies of chiral metal halide perovskites, and provides ideas for the development and design of novel chiral metal halide perovskites.