Ligand Engineering Achieves Suppression of Temperature Quenching in Pure Green Perovskite Nanocrystals for Efficient and Thermostable Electroluminescence

IF 26.6 1区材料科学 Q1 Engineering Nano-Micro Letters Pub Date : 2024-11-28 DOI:10.1007/s40820-024-01564-5

Kaiwang Chen, Qing Du, Qiufen Cao, Chao Du, Shangwei Feng, Yutong Pan, Yue Liang, Lei Wang, Jiangshan Chen, Dongge Ma

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Abstract

Highlights

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.

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配体工程抑制了纯绿色过氧化物纳米晶体的温度淬灭，实现了高效、恒温电致发光

亮点通过使用芳香胺配体，创新性地在室温下合成了纯绿色的 FAPbBr3 纳米晶体，使其具有高质量和优异的光电特性。所提出的配体工程策略首先抑制了有机-无机杂化 FAPbBr3 纳米晶体的发射热淬效应。结果表明，基于 FAPbBr3 的发光二极管在室温下亮度为 1580 cd m-2 时的外部量子效率（EQE）达到了 21.9%，而在较高的 343 K 温度下，EQE 的损失仅小于 10%。

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来源期刊

Nano-Micro Letters NANOSCIENCE & NANOTECHNOLOGY-MATERIALS SCIENCE, MULTIDISCIPLINARY

CiteScore

32.60

自引率

4.90%

发文量

981

审稿时长

1.1 months

期刊介绍： Nano-Micro Letters is a peer-reviewed, international, interdisciplinary, and open-access journal published under the SpringerOpen brand. Nano-Micro Letters focuses on the science, experiments, engineering, technologies, and applications of nano- or microscale structures and systems in various fields such as physics, chemistry, biology, material science, and pharmacy.It also explores the expanding interfaces between these fields. Nano-Micro Letters particularly emphasizes the bottom-up approach in the length scale from nano to micro. This approach is crucial for achieving industrial applications in nanotechnology, as it involves the assembly, modification, and control of nanostructures on a microscale.