Journal
JOURNAL OF MATERIALS CHEMISTRY C
Volume 6, Issue 20, Pages 5427-5433Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c8tc01433g
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Funding
- Zhejiang Provincial Natural Science Foundation of China [LD18F050001, LY17E020007]
- National Natural Science Foundation of China [51472225, 51702306]
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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.
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