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Journal of Materials Science
Erschienen in: Journal of Materials Science 2/2018

06.10.2017 | Energy materials

Upconversion effective enhancement of NaYF4:Yb3+/Er3+ nanoparticles by Ni2+ doping

verfasst von: Mengji Yi, Yuefeng Liu, Huiping Gao, Zhangyu Huang, Jiwei Liang, Yanli Mao

Erschienen in: Journal of Materials Science | Ausgabe 2/2018

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Abstract

In this manuscript, Ni2+ ions-doped NaYF4:Yb3+/Er3+ nanoparticles have been synthesized via a modified hydrothermal method. The upconversion luminescence intensities of the green (G) and red (R) emission of NaYF4:Yb3+/Er3+ co-doped with 20 mol% Ni2+ ions are the strongest which increase 32.84 and 20.99 times than that without doping Ni2+, respectively. In addition, the R/G ratio decreases with the concentration of Ni2+ increasing from 0 to 40 mol%. The underlying reason for luminescence enhanced and the R/G ratio decreased by Ni2+ doping is explored by a series of controlled experiments, and the mechanism based on the crystal field asymmetry, different substitution by Ni2+, the energy transition of Er3+ is studied in detail. The study indicates that the misshapen crystal field plays an important role in enhancement fluorescence emission, and several factors affect the R/G ratio including the crystal field, the substitution site and the energy transition. Our result may play a certain function for study and design of high-performance upconversion materials.
Vorheriger Artikel Effect of annealing temperature on the luminescence of Ce1−x PO4: Tb x 3+ nanocrystals: A novel theoretical model and experimental verification
Nächster Artikel The key roles of trace iron for nitrogen, sulfur dual-doped carbon nanospheres as high efficient oxygen reduction catalyst

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Metadaten
Titel
Upconversion effective enhancement of NaYF4:Yb3+/Er3+ nanoparticles by Ni2+ doping
verfasst von
Mengji Yi
Yuefeng Liu
Huiping Gao
Zhangyu Huang
Jiwei Liang
Yanli Mao
Publikationsdatum
06.10.2017
Verlag
Springer US
Erschienen in
Journal of Materials Science / Ausgabe 2/2018
Print ISSN: 0022-2461
Elektronische ISSN: 1573-4803
DOI
https://doi.org/10.1007/s10853-017-1601-9

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