Achieving long-term water stability and strong exciton–photon coupling in CsPbBr3 quantum dots via MOF encapsulation

IF 6.6 2区物理与天体物理 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY

Nanophotonics Pub Date : 2025-06-17 DOI:10.1515/nanoph-2025-0059

Chiao-Chih Lin, Shih-Cheng Wan, Cheng-Hui Shen, Zheng-Lin Liao, Yen Liu, Zong Yu Wu, Sheng-Chan Wu, Chia-Kai Lin, Chung-Wei Kung, Hsu-Cheng Hsu, Yu-Hsun Chou

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引用次数: 0

Abstract

CsPbBr3 perovskite quantum dots (QDs) are renowned for their exceptional optical properties, including high quantum efficiency, strong exciton binding energy, and tunable emission wavelengths. However, their practical application is hindered by their inherent susceptibility to environmental degradation. In this study, we introduce a CsPbBr3@UiO-66 composite material, where CsPbBr3 QDs self-assemble within the microporous framework of UiO-66, a robust metal-organic framework (MOF). This encapsulation strategy significantly enhances the environmental stability of CsPbBr3 QDs, maintaining luminescence for over 30 months under ambient conditions and several hours underwater. Temperature-dependent and time resolved photoluminescence (TRPL) measurements further revealed the exciton–phonon interaction within the CsPbBr3@UiO-66 material. We distributed CsPbBr3@UiO-66 into a hybrid microcavity (MC) and observed strong exciton–polariton coupling, showcasing the remarkable light–matter interaction capabilities of the composite. These findings highlight the potential of CsPbBr3@UiO-66 as a robust platform for advanced polaritonic applications, paving the way for next-generation optoelectronic devices and quantum technologies.

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通过MOF封装实现CsPbBr3量子点的长期水稳定性和强激子-光子耦合

CsPbBr3钙钛矿量子点（QDs）以其优异的光学特性而闻名，包括高量子效率、强激子结合能和可调谐的发射波长。然而，它们对环境退化的固有敏感性阻碍了它们的实际应用。在这项研究中，我们引入了一种CsPbBr3@UiO-66复合材料，其中CsPbBr3量子点在UiO-66的微孔框架内自组装，UiO-66是一种坚固的金属有机框架（MOF）。这种封装策略显著提高了CsPbBr3量子点的环境稳定性，在环境条件下和水下可保持发光超过30个月。温度依赖性和时间分辨光致发光（TRPL）测量进一步揭示了CsPbBr3@UiO-66材料内部的激子-声子相互作用。我们将CsPbBr3@UiO-66分布到混合微腔（MC）中，观察到强激子-极化子耦合，展示了复合材料显著的光-物质相互作用能力。这些发现突出了CsPbBr3@UiO-66作为先进极化应用的强大平台的潜力，为下一代光电器件和量子技术铺平了道路。

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

Nanophotonics NANOSCIENCE & NANOTECHNOLOGY-MATERIALS SCIENCE, MULTIDISCIPLINARY

CiteScore

13.50

自引率

6.70%

发文量

358

审稿时长

7 weeks

期刊介绍： Nanophotonics, published in collaboration with Sciencewise, is a prestigious journal that showcases recent international research results, notable advancements in the field, and innovative applications. It is regarded as one of the leading publications in the realm of nanophotonics and encompasses a range of article types including research articles, selectively invited reviews, letters, and perspectives. The journal specifically delves into the study of photon interaction with nano-structures, such as carbon nano-tubes, nano metal particles, nano crystals, semiconductor nano dots, photonic crystals, tissue, and DNA. It offers comprehensive coverage of the most up-to-date discoveries, making it an essential resource for physicists, engineers, and material scientists.