Luminescence and energy transfer properties of Eu3+ and Gd3+ in ZrO2

Red luminescence emission in ZrO2:Gd3+–Eu3+ nanocrystal under 250nm radiation excitation is achieved. These materials exhibit a tetragonal phase that is retained by the presence of lanthanide ions. Thus, a study of the optical properties as a function of the dopant concentration was been carried out...

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Bibliographic Details
Published in:Journal of luminescence 2014-02, Vol.146, p.398-403
Main Authors: Villabona-Leal, E.G., Diaz-Torres, L.A., Desirena, H., Rodríguez-López, J.L., Pérez, Elías, Meza, Octavio
Format: Article
Language:English
Subjects:
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Constants
Cross-disciplinary physics: materials science
rheology
Dopants
Energy transfer
Exact sciences and technology
Excitation
Fluorescence dynamics
Luminescence
Luminescencen
Materials science
Mathematical models
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
Segregations
Zirconium dioxide
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Summary:Red luminescence emission in ZrO2:Gd3+–Eu3+ nanocrystal under 250nm radiation excitation is achieved. These materials exhibit a tetragonal phase that is retained by the presence of lanthanide ions. Thus, a study of the optical properties as a function of the dopant concentration was been carried out without the deleterious effects of having segregation of other crystalline phases. We analyze the emission and lifetime curves as a function of dopant concentration through a rate equation simulation, finding an excellent fitting. As results, the nonradiative and radiative relaxation constants, as well as a quantitative estimation of the energy transfer processes among Eu3+, Gd3+ and O2− ions are reported for the first time. The proposed model can be extended (or applicable) to explain the fluorescence dynamics in other nanomaterials doped with Eu3+ and Gd3+ under UV excitation. •ZrO2 nanocrystal exhibits a tetragonal phase in the presence of Eu and Gd dopants.•Emission and lifetimes as a function of dopant concentration were analyzed by rate equation model.•Quantitative estimation of the energy transfer processes among Eu3+, Gd3+ and O2− ions are reported.
ISSN:0022-2313
1872-7883
DOI:10.1016/j.jlumin.2013.10.002