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Unveiling the interfacial electrochemiluminescence behavior of lead halide perovskite nanocrystals.

ABSTRACT: In this study, a three-phase heterostructure interface including glassy carbon (conducting medium), CsPbBr₃ perovskite nanocrystals (PNCs, emitter) and acetonitrile (electrolyte) is constructed for fully investigating the interfacial electrochemiluminescence (ECL) behavior of CsPbBr₃ PNCs. We find that these interfaces serve as bridges for efficient electron-hole transfer during the ECL process. As a proof of concept, the increase of the heterostructure interface area will accordingly enhance the ECL intensity of CsPbBr₃ PNCs. About seven-fold enhancement of the ECL intensity could be achieved when the interface area has triple-fold increase, which provides a new perspective to construct more efficient ECL systems via interface engineering.

SUBMITTER: Qiu L

PROVIDER: S-EPMC9417726 | biostudies-literature | 2019 Oct

REPOSITORIES: biostudies-literature

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Unveiling the interfacial electrochemiluminescence behavior of lead halide perovskite nanocrystals.

Qiu Linghang L Lin Longhui L Huang Yipeng Y Lai Zhiwei Z Li Feiming F Wang Shuya S Lin Fangyuan F Li Jianfeng J Wang Yiru Y Chen Xi X

Nanoscale advances 20190903 10

In this study, a three-phase heterostructure interface including glassy carbon (conducting medium), CsPbBr<sub>3</sub> perovskite nanocrystals (PNCs, emitter) and acetonitrile (electrolyte) is constructed for fully investigating the interfacial electrochemiluminescence (ECL) behavior of CsPbBr<sub>3</sub> PNCs. We find that these interfaces serve as bridges for efficient electron-hole transfer during the ECL process. As a proof of concept, the increase of the heterostructure interface area will ...[more]

PMID: 36132118

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