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Issue 12, 2018
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Stable CsPbBr3 perovskite quantum dots with high fluorescence quantum yields

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Abstract

All-inorganic CsPbX3 (X = I, Br, Cl) perovskite nanocrystals have emerged as a new class of optoelectronic material with tunable emission wavelengths, narrow full-width at half-maximum (FWHM) and high photoluminescence quantum yields (PLQYs) (≥50% in general). However, the instability caused by high delocalization of surface ions is still the major issue that obstructs their application. The type of surface ligands plays a key role in the stability of perovskite nanocrystals. In this work, stable cubic Br-rich CsPbBr3 quantum dots (QDs) with uniform particle sizes, high quantum yields and high crystallinity were obtained by a one-step hot-injection synthesis method. Oleylamine (OM) as one of the ligands in the classic synthesis method was replaced with (3-aminopropyl)triethoxysilane (APTES). The stability of the CsPbBr3 QDs was significantly improved under different testing conditions.

Graphical abstract: Stable CsPbBr3 perovskite quantum dots with high fluorescence quantum yields

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Publication details

The article was received on 11 Mar 2018, accepted on 25 Apr 2018 and first published on 10 May 2018


Article type: Paper
DOI: 10.1039/C8NJ01191E
Citation: New J. Chem., 2018,42, 9496-9500
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    Stable CsPbBr3 perovskite quantum dots with high fluorescence quantum yields

    M. Zhang, Z. Tian, D. Zhu, H. He, S. Guo, Z. Chen and D. Pang, New J. Chem., 2018, 42, 9496
    DOI: 10.1039/C8NJ01191E

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