Matthew P. Hautzinger, Willa Mihalyi-Koch, Song Jin
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引用次数: 0
摘要
金属卤化物包晶是一类重要的半导体，目前正被用作光电吸收剂，并在光发射和其他设备应用方面进行探索。卤化物包晶的半导体特性与其组成和结构密切相关。具体来说，金属卤化物八面体的对称性、倾斜度和畸变会影响带状结构和其他光电特性。在本综述中，我们研究了三维（3D）卤化物包晶 AMX3（M = 二价金属；X = 卤化物）中单价 A 位阳离子的各种组成。我们重点研究了 A 位阳离子如何模板化无机金属卤化物包晶框架，从而导致晶体结构对称性以及 M-X 成键参数发生变化，并在 AMX3 结构综合表中进行了总结。此外，还进一步概述了 A 位阳离子的运动、合金化的影响以及具有独特 A 位阳离子的二维 Ruddlesden-Popper 包晶结构。研究显示了这些以 A 位阳离子为主的结构参数与由此产生的光电特性（如带隙）之间的相关性。这篇综述应作为金属卤化物包晶的 A 位阳离子结构化学的参考文献，并激励人们继续研究探索较少的金属卤化物包晶成分和结构。
Metal halide perovskites are an important class of semiconductors now being implemented as photovoltaic absorbers and explored for light emission, among other device applications. The semiconducting properties of halide perovskites are deeply intertwined with their composition and structure. Specifically the symmetry, tilting, and distortions of the metal halide octahedra impact the band structure and other optoelectronic properties. In this review, we examine the various compositions of monovalent A-site cations in three-dimensional (3D) halide perovskites AMX3 (M = divalent metal; X = halide). We focus on how the A-site cation templates the inorganic metal-halide perovskite framework, resulting in changes in the crystal structure symmetry, as well as M–X bonding parameters, summarized in a comprehensive table of AMX3 structures. The A-site cation motion, effects of alloying, and 2D Ruddlesden–Popper perovskite structures with unique A-site cations are further overviewed. Correlations are shown between these A-site cation dominated structural parameters and the resulting optoelectronic properties such as band gap. This review should serve as a reference for the A-site cation structural chemistry of metal halide perovskites and inspire continued research into less explored metal halide perovskite compositions and structures.
期刊介绍：
The journal Chemistry of Materials focuses on publishing original research at the intersection of materials science and chemistry. The studies published in the journal involve chemistry as a prominent component and explore topics such as the design, synthesis, characterization, processing, understanding, and application of functional or potentially functional materials. The journal covers various areas of interest, including inorganic and organic solid-state chemistry, nanomaterials, biomaterials, thin films and polymers, and composite/hybrid materials. The journal particularly seeks papers that highlight the creation or development of innovative materials with novel optical, electrical, magnetic, catalytic, or mechanical properties. It is essential that manuscripts on these topics have a primary focus on the chemistry of materials and represent a significant advancement compared to prior research. Before external reviews are sought, submitted manuscripts undergo a review process by a minimum of two editors to ensure their appropriateness for the journal and the presence of sufficient evidence of a significant advance that will be of broad interest to the materials chemistry community.
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