Abstract Metal halide perovskite nanocrystals, as a new class of light-harvesting and light-emitting materials, have recently attracted a lot of attention for an impressive variety of optoelectronic applications. Some advantages of perovskite nanocrystals include there being low-cost, easy-to-perform synthetic routes, convenient solution processability, precise bandgap tunability over the entire visible spectral range, and exceptionally high photoluminescence quantum yields. In this review, we summarize recent advances of perovskite nanocrystals with an emphasis on the synthetic methods, growth mechanisms, optical properties, and related applications. The focus is placed on emerging new results in terms of the increasing diversity in the synthetic methodologies, ability to control nanoparticle shapes, stability enhancement strategies (including direct syntheses in water), and on the particle formation mechanisms. The basic design principles and up-to-date performance of optoelectronic devices based on perovskite nanocrystals are considered, with a main focus on light-emitting diodes, but also touching upon solar cells, photodetectors, and lasers. We finish the review with a critical outlook into the open issues and future perspective of this versatile, still rapidly developing field.

中文翻译：

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金属卤化物钙钛矿纳米晶体的进展：合成策略、生长机制和光电应用

摘要 金属卤化物钙钛矿纳米晶体作为一类新型的集光和发光材料，最近因其各种令人印象深刻的光电应用而引起了广泛关注。钙钛矿纳米晶体的一些优点包括低成本、易于执行的合成路线、方便的溶液加工性、在整个可见光谱范围内的精确带隙可调性以及极高的光致发光量子产率。在这篇综述中，我们总结了钙钛矿纳米晶体的最新进展，重点介绍了合成方法、生长机制、光学特性和相关应用。重点放在合成方法日益多样化、控制纳米颗粒形状的能力、稳定性增强策略（包括在水中直接合成），以及颗粒形成机制。考虑了基于钙钛矿纳米晶体的光电器件的基本设计原理和最新性能，主要关注发光二极管，但也涉及太阳能电池、光电探测器和激光器。我们对这个多才多艺、仍在快速发展的领域的开放性问题和未来前景持批判态度，以此结束了这次审查。