Efficient and Stable Blue CsPbBr3 Perovskite Nanocrystals through Cd-Ion Thermal Doping of CdS Quantum Dots.

IF 8.2 2区材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY

ACS Applied Materials & Interfaces Pub Date : 2025-07-29 DOI:10.1021/acsami.5c08245

Jianjun Liu,Shengming Liu,Kazushi Enomoto,Retno Miranti,Yong-Jin Pu

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引用次数: 0

Abstract

Blue-light halide perovskite nanocrystals (NCs) have faced significant limitations in optoelectronic applications due to challenges in size control, photoluminescent efficiency, and stability. This work introduces a novel thermal doping method by utilizing unique CdS quantum dots (QD) as a Cd source to convert green-light CsPbBr3 NCs to blue-light perovskite NCs. The dynamic dissociation of CdS QDs at 120 °C ensures a stable supply of Cd ions during the doping process. The doped cubic perovskite NCs, with an increased size (∼20 nm), exhibit efficient blue-light emission. Furthermore, the doped NCs demonstrate exceptional air and thermal stability in solid films, attributed to lattice contraction and reduced surface energy, effectively addressing common issues associated with blue-emitting perovskite NCs. This method provides a robust pathway for producing efficient and stable blue-light perovskite NCs, offering promising potential for enhancing the performance of blue-light perovskite NC-based light-emitting diode devices.

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通过CdS量子点的cd离子热掺杂制备高效稳定的蓝色CsPbBr3钙钛矿纳米晶体。

蓝光卤化物钙钛矿纳米晶体（NCs）由于在尺寸控制、光致发光效率和稳定性方面的挑战，在光电应用中面临着很大的限制。本文介绍了一种新的热掺杂方法，利用独特的CdS量子点（QD）作为Cd源，将绿光CsPbBr3纳米碳化物转化为蓝光钙钛矿纳米碳化物。在120°C下CdS量子点的动态解离确保了掺杂过程中Cd离子的稳定供应。掺杂的立方钙钛矿纳米碳管尺寸增大（~ 20 nm），表现出高效的蓝光发射。此外，由于晶格收缩和表面能降低，掺杂的NCs在固体薄膜中表现出优异的空气和热稳定性，有效地解决了与蓝色钙钛矿NCs相关的常见问题。该方法为生产高效、稳定的蓝光钙钛矿纳米材料提供了一条可靠的途径，为提高蓝光钙钛矿纳米材料基发光二极管器件的性能提供了广阔的前景。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

ACS Applied Materials & Interfaces 工程技术-材料科学：综合

CiteScore

16.00

自引率

6.30%

发文量

4978

审稿时长

1.8 months

期刊介绍： ACS Applied Materials & Interfaces is a leading interdisciplinary journal that brings together chemists, engineers, physicists, and biologists to explore the development and utilization of newly-discovered materials and interfacial processes for specific applications. Our journal has experienced remarkable growth since its establishment in 2009, both in terms of the number of articles published and the impact of the research showcased. We are proud to foster a truly global community, with the majority of published articles originating from outside the United States, reflecting the rapid growth of applied research worldwide.