Intense blue up-conversion luminescence in Tm3+/Yb3+ codoped oxyfluoride glass-ceramics containing beta-PbF2 nanocrystals.
Identifieur interne : 001858 ( Main/Curation ); précédent : 001857; suivant : 001859Intense blue up-conversion luminescence in Tm3+/Yb3+ codoped oxyfluoride glass-ceramics containing beta-PbF2 nanocrystals.
Auteurs : Junjie Zhang [République populaire de Chine] ; Zhongchao Duan ; Dongbing He ; Shixun Dai ; Liyan Zhang ; Lili HuSource :
- Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy [ 1386-1425 ] ; 2005.
Descripteurs français
- KwdFr :
- MESH :
English descriptors
- KwdEn :
- MESH :
- chemical , chemistry : Fluorides, Fluorine, Lead, Oxides, Thulium, Ytterbium.
- chemistry : Ceramics, Nanostructures.
- Energy Transfer, Luminescence, Spectrum Analysis, Temperature, X-Ray Diffraction.
Abstract
Up-conversion luminescence properties of a Tm3+/Yb3+ codoped oxyfluoride glass-ceramics under 980 nm excitation are investigated. Intense blue emission centered at 476 nm, corresponding to 1G4-->3H6 transitions of Tm3+ was simultaneously observed in the transparent oxyfluoride glass ceramics at room temperature. The intensity of the blue up-conversion luminescence in a 1 mol% YbF3-containing glass-ceramic was found to be about 40 times stronger than that in the precursor oxyfluoride glass. The reason for the intense Tm3+ up-conversion luminescence in the oxyfluoride glass-ceramics is discussed. The dependence of up-conversion intensities on excitation power and possible up-conversion mechanism are also evaluated.
DOI: 10.1016/j.saa.2005.03.011
PubMed: 16095958
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<term>Lead (chemistry)</term>
<term>Luminescence</term>
<term>Nanostructures (chemistry)</term>
<term>Oxides (chemistry)</term>
<term>Spectrum Analysis</term>
<term>Temperature</term>
<term>Thulium (chemistry)</term>
<term>X-Ray Diffraction</term>
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<term>Luminescence</term>
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<term>Transfert d'énergie</term>
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<term>Luminescence</term>
<term>Nanostructures</term>
<term>Oxydes</term>
<term>Plomb</term>
<term>Température</term>
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<term>Transfert d'énergie</term>
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<front><div type="abstract" xml:lang="en">Up-conversion luminescence properties of a Tm3+/Yb3+ codoped oxyfluoride glass-ceramics under 980 nm excitation are investigated. Intense blue emission centered at 476 nm, corresponding to 1G4-->3H6 transitions of Tm3+ was simultaneously observed in the transparent oxyfluoride glass ceramics at room temperature. The intensity of the blue up-conversion luminescence in a 1 mol% YbF3-containing glass-ceramic was found to be about 40 times stronger than that in the precursor oxyfluoride glass. The reason for the intense Tm3+ up-conversion luminescence in the oxyfluoride glass-ceramics is discussed. The dependence of up-conversion intensities on excitation power and possible up-conversion mechanism are also evaluated.</div>
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