Lead-Doped Cesium Manganese Halide Perovskite Nanocrystals for Light-Emitting Diodes: Room-Temperature Synthesis, Energy Transfer, and Phase Modulating

IF 9.6 1区化学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY ACS Materials Letters Pub Date : 2025-02-14 DOI:10.1021/acsmaterialslett.4c0222410.1021/acsmaterialslett.4c02224

Jiejun Ren*, Longyun Liu, Huiping Liu, Xiaopeng Zhou, Jiale Li, Fan Liu*, Liangjun Chen, Guoping Yan and Yuhua Wang*,

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Abstract

Lead halide perovskite nanocrystals (NCs) have been attracting the interest of researchers due to their outstanding photophysical properties. However, their practical application is greatly hindered by lead toxicity. Despite series of lead-free NCs being investigated, they generally exhibit broadband emission and poor color tunability. Herein, we proposed a facile room temperature synthesis of highly efficient color-tunable CsMnBr₃:Pb²⁺ NCs. Ascribing to the efficient energy transfer from [PbBr₆]^4– to Mn²⁺, the photoluminescent quantum yield (PLQY) of CsMnBr₃:Pb²⁺ NCs reaches up to 83.6%, which is 12.5 times that of undoped CsMnBr₃ NCs. More interestingly, the red-emitting CsMnBr₃:Pb²⁺ NCs could be easily transformed to green-emitting Cs₃MnBr₅:Pb²⁺ NCs through coordination modulating. The color-tunable CsMnBr₃:Pb²⁺ NCs and Cs₃MnBr₅:Pb²⁺ NCs possess high PLQY and high color purity, demonstrating great application potential in optoelectronic fields.

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用于发光二极管的铅掺杂卤化铯锰过氧化物纳米晶体：室温合成、能量转移和相位调制

卤化铅过氧化物纳米晶体（NCs）因其出色的光物理特性一直吸引着研究人员的兴趣。然而，铅的毒性极大地阻碍了它们的实际应用。尽管对一系列无铅 NC 进行了研究，但它们通常表现出宽带发射和较差的颜色可调性。在此，我们提出了一种室温下轻松合成高效颜色可调 CsMnBr3:Pb2+ NCs 的方法。由于[PbBr6]4-向 Mn2+ 的高效能量转移，CsMnBr3:Pb2+ NCs 的光致发光量子产率（PLQY）高达 83.6%，是未掺杂 CsMnBr3 NCs 的 12.5 倍。更有趣的是，通过配位调节，红色发光的 CsMnBr3:Pb2+ NCs 可以很容易地转变为绿色发光的 Cs3MnBr5:Pb2+ NCs。颜色可调的 CsMnBr3:Pb2+ NCs 和 Cs3MnBr5:Pb2+ NCs 具有高 PLQY 和高色纯度，在光电领域具有巨大的应用潜力。

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来源期刊

ACS Materials Letters MATERIALS SCIENCE, MULTIDISCIPLINARY-

CiteScore

14.60

自引率

3.50%

发文量

261

期刊介绍： ACS Materials Letters is a journal that publishes high-quality and urgent papers at the forefront of fundamental and applied research in the field of materials science. It aims to bridge the gap between materials and other disciplines such as chemistry, engineering, and biology. The journal encourages multidisciplinary and innovative research that addresses global challenges. Papers submitted to ACS Materials Letters should clearly demonstrate the need for rapid disclosure of key results. The journal is interested in various areas including the design, synthesis, characterization, and evaluation of emerging materials, understanding the relationships between structure, property, and performance, as well as developing materials for applications in energy, environment, biomedical, electronics, and catalysis. The journal has a 2-year impact factor of 11.4 and is dedicated to publishing transformative materials research with fast processing times. The editors and staff of ACS Materials Letters actively participate in major scientific conferences and engage closely with readers and authors. The journal also maintains an active presence on social media to provide authors with greater visibility.

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