The past two years have witnessed heightened interest in metal-halide perovskites as promising optoelectronic materials for solid-state light emitting applications beyond photovoltaics. Metal-halide perovskites are low-cost solution-processable materials with excellent intrinsic properties such as broad tunability of bandgap, defect tolerance, high photoluminescence quantum efficiency and high emission color purity (narrow full-width at half maximum). In this review, the photophysical properties of hybrid perovskites, which relates with light-emission, such as broad tunability, nature of the recombination processes and quantum efficiency are examined. The prospects of hybrid perovskite light-emitting diodes and lasers, and their key challenges are also discussed.

中文翻译：

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用于固态发光应用的广泛可调金属卤化物钙钛矿

在过去的两年里，人们对金属卤化物钙钛矿作为有前途的光电材料的兴趣日益浓厚，它可用于光伏以外的固态发光应用。金属卤化物钙钛矿是一种低成本的可溶液加工材料，具有优异的固有特性，例如带隙的宽可调性、缺陷耐受性、高光致发光量子效率和高发射色纯度（半峰全宽窄）。在这篇综述中，研究了与发光相关的杂化钙钛矿的光物理特性，例如广泛的可调性、复合过程的性质和量子效率。还讨论了混合钙钛矿发光二极管和激光器的前景，以及它们面临的主要挑战。