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  • Recent Progress of Chiral P...
    Ma, Jiaqi; Wang, Haizhen; Li, Dehui

    Advanced materials (Weinheim), July 1, 2021, Volume: 33, Issue: 26
    Journal Article

    Chiral materials with intrinsic inversion‐symmetric structures possess many unique physicochemical features, including circular dichroism, circularly polarized photoluminescence, nonlinear optics, ferroelectricity, and spintronics. Halide perovskites have attracted considerable attention owing to their excellent optical and electrical properties, which are particularly suitable for realizing high power‐conversion efficiency in solar cells. Recent studies have shown that chirality can be transferred from chiral organic ligands into halide perovskites and the resultant chiral perovskites combine the advantages of both chiral materials and halide perovskites; this provides an ideal platform to design next‐generation optoelectronic and spintronic devices. In this progress report, the most recent advances are summarized in various chemical structures of chiral perovskites, their synthesis strategies, chirality generation mechanisms, and physical properties. Furthermore, the potential chiral‐halide‐perovskite‐based applications are presented and the challenges and prospects of chiral perovskites are discussed. This report outlines the diverse construction strategies of and proposes research directions for chiral halide perovskites; thus, it provides insights into the design of novel chiral perovskites and facilitates investigation of the optoelectronic applications that employ chirality. Chiral perovskites are considered to be a promising class of materials for next‐generation optoelectronic and spintronic devices, owing to their superiority in combining chirality and high dielectric constants, high optical‐absorption coefficients, and strong spin–orbit coupling. The synthesis strategies, chirality generation mechanisms, physical properties, and applications of chiral perovskites are reviewed.