In this progress report, recent improvements to the room temperaturesyntheses of lead halide perovskite nanocrystals (APbX₃, X = Cl, Br, I) are assessed, focusing on various aspects which influence the commercial viability of the technology. Perovskite nanocrystals can be prepared easily from low‐cost precursors under ambient conditions, yet they have displayed near‐unity photoluminescence quantum yield with narrow, highly tunable emission peaks. In addition to their impressive ambipolar charge carrier mobilities, these properties make lead halide perovskite nanocrystals very attractive for light‐emitting diode (LED) applications. However, there are still many practical hurdles preventing commercialization. Recent developments in room temperature synthesis and purification protocols are reviewed, closely evaluating the suitability of particular techniques for industry. This is followed by an assessment of the wide range of ligands deployed on perovskite nanocrystal surfaces, analyzing their impact on colloidal stability, as well as LED efficiency. Based on these observations, a perspective on important future research directions that can expedite the industrial adoption of perovskite nanocrystals is provided.

中文翻译：

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卤化钙钛矿型纳米晶体：室温合成以实现商业可行性

在本进展报告中，最近对卤化钙钛矿纳米晶体（APbX ₃，X =Cl，Br，I）进行评估，重点关注影响该技术商业可行性的各个方面。钙钛矿纳米晶体可以在环境条件下由低成本的前体轻松制备，但是它们显示出近统一的光致发光量子产率，且发射峰狭窄且高度可调。除了令人印象深刻的双极性载流子迁移率，这些特性还使卤化钙钛矿铅纳米晶体对于发光二极管（LED）应用非常有吸引力。但是，仍然存在许多阻碍商业化的实际障碍。回顾了室温合成和纯化方案的最新进展，仔细评估了特定技术在工业上的适用性。然后评估钙钛矿纳米晶体表面上部署的各种配体，分析它们对胶体稳定性和LED效率的影响。基于这些观察，提供了关于将来重要的研究方向的观点，可以加快钙钛矿纳米晶体的工业应用。