Статья

Luminescent Dynamics of Perovskite Quantum Dots Encapsulated in Metal–Organic Frameworks

Zixi YinHubei Key Laboratory of Low Dimensional Optoelectronic Materials and Devices, Hubei University of Arts and Science, Xiangyang 441053, Hubei, ChinaQi SunMIIT Key Laboratory of Advanced Display Materials and Devices, Institute of Optoelectronics & Nanomaterials, College of Materials Science and Engineering, Nanjing University of Science and Technology, Nanjing 210094, ChinaJing LengState Key Laboratory of Molecular Reaction Dynamics and Dynamics Research Center for Energy and Environmental Materials, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, ChinaLifang LiuUniversity of Chinese Academy of Sciences, Beijing 100049, ChinaBoning WuState Key Laboratory of Molecular Reaction Dynamics and Dynamics Research Center for Energy and Environmental Materials, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, ChinaShengye JinState Key Laboratory of Molecular Reaction Dynamics and Dynamics Research Center for Energy and Environmental Materials, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China

2023en

ABI

Аннотация

The encapsulation of perovskite quantum dots (PQDs) in metal–organic frameworks (MOF) has emerged as a promising strategy to improve their environmental stability and tune their optical property. Although energy or charge transfer processes between PQDs and the MOF matrix have already been reported, the triplet-energy transfer (TET) process from MOF to PQD, which is useful for applications such as photon upconversion and photoredox catalysis, still remains unexplored. Herein, we encapsulated CH 3 NH 3 Pb(Br/I) 3 PQDs (MAPb(Br/I) 3 ) into a zinc isophthalate MOF (denoted as Y346) to construct a solid hybrid composite (PQDs@Y346). Compared with traditional colloid PQDs, the photostability of PQDs in PQDs@Y346 is enhanced by about hundreds of times due to the protection of Y346 skeleton, accompanied with a prominent photoinduced self-healing behavior. Furthermore, a slow but efficient (∼57.8%) Y346-to-PQDs TET process is observed in PQDs@Y346 composites, leading to a long-lived (∼3 ms) delayed emission from PQDs. Our findings suggest PQDs@Y346 composites hold great promise for future long-term optoelectronic and photochemical applications.

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Идентификаторы

DOI: 10.1021/acs.jpcc.3c02341

Цитирования и источники

Цитирований: 3Использованных источников: 0

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