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Issue 20, 2018
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Inverse thermal quenching effect in lanthanide-doped upconversion nanocrystals for anti-counterfeiting

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Abstract

It is common that thermal quenching in luminescent materials inevitably occurs with an elevation in temperature. Herein, an inverse thermal quenching effect in lanthanide-doped upconversion nanocrystals was reported. Specifically, defects with an appropriate energy state were designed in Yb/Er (Ho, Tm) doped Na3ZrF7 nanocrystals to actualize a thermal-induced enhancement in luminescent intensity. Owing to this special temperature dependent optical property, our results reveal that these kinds of materials are very suitable for high security anti-counterfeiting applications.

Graphical abstract: Inverse thermal quenching effect in lanthanide-doped upconversion nanocrystals for anti-counterfeiting

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Publication details

The article was received on 27 Mar 2018, accepted on 26 Apr 2018 and first published on 26 Apr 2018


Article type: Paper
DOI: 10.1039/C8TC01433G
J. Mater. Chem. C, 2018,6, 5427-5433

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    Inverse thermal quenching effect in lanthanide-doped upconversion nanocrystals for anti-counterfeiting

    L. Lei, D. Chen, C. Li, F. Huang, J. Zhang and S. Xu, J. Mater. Chem. C, 2018, 6, 5427
    DOI: 10.1039/C8TC01433G

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