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Facile synthesis of NaYF4:Ln/NaYF4:Eu composite with up-conversion and down-shifting luminescence

Authors :
Cuiliu Li
Wenjun Zhang
Chengyu Zhu
Xiaoxiong Zhang
Xiaohong Qin
Source :
Journal of Photochemistry and Photobiology A: Chemistry. 391:112388
Publication Year :
2020
Publisher :
Elsevier BV, 2020.

Abstract

Herein, a series of novel dual-mode NaYF4:Ln/NaYF4:Eu (Ln = Yb, Er, Tm) composites involving up-conversion and down-shifting luminescence have been prepared by a facile synthetic method. X-ray diffraction, scanning electron microscopy, transmission electron microscopy, energy dispersive X-ray analysis, up-conversion and down-shifting fluorescence spectrometer were used to characterize the materials. By doping different lanthanide ions and tailoring the molar ratio of the doped lanthanide ions, three kinds of composites were obtained which could exhibit three-primary-color (red-green-blue, abbreviating as RGB) up-conversion luminescence under the irradiation of 980 nm laser, and generate red down-shifting color under the excitation of 393 nm. The composites show excellent photoluminescence properties, which attribute to NaYF4 served as a major matrix for both the up-conversion and down-shifting materials. Moreover, the work provides a promising material for anti-counterfeiting application.

Details

ISSN :
10106030
Volume :
391
Database :
OpenAIRE
Journal :
Journal of Photochemistry and Photobiology A: Chemistry
Accession number :
edsair.doi...........0ebea09bf2b85502ea21ff6c9359fdd4
Full Text :
https://doi.org/10.1016/j.jphotochem.2020.112388