Luminescence investigation of Yb3+/Er3+ codoped single LiYF4 microparticle

Tetragonal phase LiYF4:Yb3+/Er3+ microparticles are synthesized via facile hydrothermal method. Single LiYF4 microparticle is excited with IR laser at 980nm in a confocal setup, and strong green and weak red emissions are observed. It is found that single LiYF4:Yb3+/Er3+ microparticle with sub-struc...

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Bibliographic Details
Published in:Journal of luminescence 2014-08, Vol.152, p.44-48
Main Authors: Gao, Wei, Zheng, Hairong, He, Enjie, Lu, Ying, Gao, Fangqi
Format: Article
Language:English
Subjects:
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Cross-disciplinary physics: materials science
rheology
Exact sciences and technology
LiYF4:Yb3+/Er3
Materials science
Nanocrystalline materials
Nanoscale materials and structures: fabrication and characterization
Optical properties and condensed-matter spectroscopy and other interactions of matter with particles and radiation
Photoluminescence
Physics
Single microparticle
Upconversion luminescence emission
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Summary:Tetragonal phase LiYF4:Yb3+/Er3+ microparticles are synthesized via facile hydrothermal method. Single LiYF4 microparticle is excited with IR laser at 980nm in a confocal setup, and strong green and weak red emissions are observed. It is found that single LiYF4:Yb3+/Er3+ microparticle with sub-structure presents stronger upconversion luminescence emission and smaller intensity ratio of red to green emission than that from LiYF4:Yb3+/Er3+ microparticle with no sub-structure. The possible mechanism, the influence of particle size and the existence of EDTA on the upconversion luminescence emission are investigated. The current study suggests that the luminescence observation with single micropaticle can effectively avoid the influence of environment and neighbor particles, which is important for investigating the luminescence properties of micro- or nano-crystals and for extending their application. •Single LiYF4 microparticle is excited with IR laser at 980nm in a confocal setup, and strong green and weak red emissions are observed.•Single LiYF4 microparticle with different morphology exhibits different fluorescence emission intensity and intensity ratio of red to green emission.•The possible mechanism, the influence of particle size and the existence of EDTA on the upconversion emission are investigated.
ISSN:0022-2313
1872-7883
DOI:10.1016/j.jlumin.2013.10.046