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Ultrathin CsPbX3 (X = Cl, Br, I) nanoplatelets: solvothermal synthesis and optical spectroscopic properties

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Abstract

The preparation of CsPbX3 nanoplatelets and the investigation of their optical properties have been rarely reported. Herein, the successful development of all-inorganic CsPbX3 (X = Cl, Br, or I) perovskite quantum dots has been achieved and their unique optical and electrical properties are discussed. Apre-dissolution assisted solvothermal reaction was developed to synthesize ultrathin (∼3 nm) CsPbBr3 nanoplatelets with strong exciton absorption, with a 0.41 eV blue-shifted emission relative to that of CsPbBr3 nanocrystals and a high quantum yield of 28%. Anion exchange allowed the variation of the halogen content of the nanoplatelets and allowed them to retain their shape and size and achieve multi-color emission.

Graphical abstract: Ultrathin CsPbX3 (X = Cl, Br, I) nanoplatelets: solvothermal synthesis and optical spectroscopic properties

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Publication details

The article was received on 01 May 2018, accepted on 02 Jul 2018 and first published on 02 Jul 2018


Article type: Paper
DOI: 10.1039/C8DT01720D
Citation: Dalton Trans., 2018, Advance Article
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    Ultrathin CsPbX3 (X = Cl, Br, I) nanoplatelets: solvothermal synthesis and optical spectroscopic properties

    D. Chen, X. Chen, J. Li, X. Li and J. Zhong, Dalton Trans., 2018, Advance Article , DOI: 10.1039/C8DT01720D

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