Site selective spectroscopy of Eu3+ in heavy-metal oxide glasses

In this work, we report time-resolved line-narrowed fluorescence spectra of the 5D0→7F0−6 transitions of Eu3+-doped 40Bi2O3–40PbO–10Ga2O3–10GeO2 and 60GeO2–25PbO–15Nb2O5 glasses obtained at 10K by using different resonant excitation wavelengths along the 7F0→5D0 transition. The wavelength dependence...

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Bibliographic Details
Published in:Journal of non-crystalline solids 2006-07, Vol.352 (23-25), p.2448-2451
Main Authors: Cascales, C., Balda, R., Fernández, J., Arriandiaga, M.A., Fdez-Navarro, J.M.
Format: Article
Language:English
Subjects:
Amorphous materials, glasses and other disordered solids
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Exact sciences and technology
Germanates
Heavy-metal oxides
Laser–matter interactions
Optical properties and condensed-matter spectroscopy and other interactions of matter with particles and radiation
Optical spectroscopy
Oxide glasses
Photoluminescence
Physics
Rare-earths in glasses
Time resolved measurements
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Summary:In this work, we report time-resolved line-narrowed fluorescence spectra of the 5D0→7F0−6 transitions of Eu3+-doped 40Bi2O3–40PbO–10Ga2O3–10GeO2 and 60GeO2–25PbO–15Nb2O5 glasses obtained at 10K by using different resonant excitation wavelengths along the 7F0→5D0 transition. The wavelength dependence of the 7F1 splitting in both glasses suggests the existence of a broad distribution of Eu3+ centres possessing a variety of local field environments. The influence of the local coordination ions on the optical properties of Eu3+ has been studied by analysing the dependence of the crystal field (CF) parameters on the excitation energy along the 7F0→5D0 transition.
ISSN:0022-3093
1873-4812
DOI:10.1016/j.jnoncrysol.2006.03.021