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Robust CsPbX3 (X=Cl, Br, I) perovskite quantum dots embedded glasses: nanocrystallization, improved stability and visible full-spectral tunable emissions

Abstract

Currently, all inorganic perovskite quantum dots (QDs) of cesium lead halide (CsPbX3, X=Cl, Br, I) have been mainly fabricated by wet chemical methods. Unfortunately, the applications of perovskite QDs have been limited due to their poor stability. In the present work, in-situ growth of whole-family CsPbX3 (X=Cl, Br, I) perovskite QDs in Zn-P-B-Sb based oxide glass via a glass crystallization strategy is reported. The as-prepared CsPbX3 QDs@glass nanocomposites exhibit typical excitonic recombination emissions and superior chemical stability benefited from the protection of robust inorganic glass matrix. Through modifying the molar ratio of halide sources in glass, multi-color tunable emissions in the entire visible spectral range of 400-750 nm are achieved. As a result, light-emitting diode device can be constructed by coupling blue-emissive CsPbBrCl2, green-emissive CsPbBr3 and red-emissive CsPbBr0.5I2.5 QDs@glass powders with a commercial ultraviolet chip, yielding bright white light luminescence with excellent optoelectronic performance.

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Publication details

The article was received on 23 Sep 2018, accepted on 04 Nov 2018 and first published on 06 Nov 2018


Article type: Paper
DOI: 10.1039/C8TC04786C
Citation: J. Mater. Chem. C, 2018, Accepted Manuscript
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    Robust CsPbX3 (X=Cl, Br, I) perovskite quantum dots embedded glasses: nanocrystallization, improved stability and visible full-spectral tunable emissions

    D. Chen, S. Yuan, J. Chen, J. Zhong and X. Xu, J. Mater. Chem. C, 2018, Accepted Manuscript , DOI: 10.1039/C8TC04786C

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