• The innovative synthesis of pure green FAPbBr₃ nanocrystals at room temperature was exploited by employing aromatic amine ligands to refine the perovskite nanocrystals with high quality and excellent optoelectronic properties.

• The proposed ligand engineering strategy firstly realized the suppression of emission thermal quenching effect in the organic-inorganic hybrid FAPbBr₃ nanocrystals.

• It was demonstrated that the FAPbBr₃ based light-emitting diodes achieved a room temperature external quantum efficiency (EQE) of 21.9% at the luminance of 1580 cd m^-2, and only presented less than 10% loss in EQE at a higher temperature of 343 K.

中文翻译：

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配体工程实现了对纯绿色钙钛矿纳米晶体中温度淬灭的抑制，以实现高效和热稳定的电致发光

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  利用芳香胺配体在室温下创新性地合成纯绿色 FAPbBr₃ 纳米晶，以细化具有高质量和优异光电性能的钙钛矿纳米晶体。

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  所提出的配体工程策略首先实现了有机-无机杂化 FAPbBr₃ 纳米晶中发射热猝灭效应的抑制。

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  结果表明，基于 FAPbBr₃ 的发光二极管在 1580 cd ^m-2 的亮度下实现了 21.9% 的室温外部量子效率 （EQE），并且在 343 K 的较高温度下仅表现出不到 10% 的 EQE 损耗。