ThuliumV1, Main, Exploration, bibRecord, 001684

Structural and up-conversion luminescence properties in Tm3+/Yb3+-codoped heavy metal oxide-halide glasses.

Identifieur interne : 001684 ( Main/Exploration ); précédent : 001683; suivant : 001685

Structural and up-conversion luminescence properties in Tm3+/Yb3+-codoped heavy metal oxide-halide glasses.

Auteurs : Hongtao Sun [République populaire de Chine] ; Zhongchao Duan ; Gang Zhou ; Chunlei Yu ; Meisong Liao ; Lili Hu ; Junjie Zhang ; Zhonghong Jiang

Source :

Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy [ 1386-1425 ] ; 2006.

RBID : pubmed:15950531

Descripteurs français

KwdFr :
- Fluorescence, Métaux lourds (), Oxydes (), Thulium (), Verre (), Ytterbium ().
MESH :
- Fluorescence, Métaux lourds, Oxydes, Thulium, Verre, Ytterbium.

English descriptors

KwdEn :
- Fluorescence, Glass (chemistry), Metals, Heavy (chemistry), Oxides (chemistry), Thulium (chemistry), Ytterbium (chemistry).
MESH :
- chemical , chemistry : Metals, Heavy, Oxides, Thulium, Ytterbium.
- chemistry : Glass.
- Fluorescence.

Abstract

Tm3+/Yb3+-codoped heavy metal oxide-halide glasses have been synthesized by conventional melting and quenching method. Structural properties were obtained based on the Raman spectra, indicating that halide ion has an important influence on the phonon density and maximum phonon energy of host glasses. Intense blue and weak red emissions centered at 477 and 650 nm, corresponding to the transitions 1G4-->3H6 and 1G4-->3H4, respectively, were observed at room temperature. The possible up-conversion mechanisms are discussed and estimated. With increasing halide content, the up-conversion luminescence intensity and blue luminescence lifetimes of Tm3+ ion increase notably. Our results show that with the substitution of halide ion for oxygen ion, the decrease of phonon density and maximum phonon energy of host glasses both contribute to the enhanced up-conversion emissions.

DOI: 10.1016/j.saa.2005.04.043
PubMed: 15950531

Affiliations:

République populaire de Chine

Le document en format XML

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<front><div type="abstract" xml:lang="en">Tm3+/Yb3+-codoped heavy metal oxide-halide glasses have been synthesized by conventional melting and quenching method. Structural properties were obtained based on the Raman spectra, indicating that halide ion has an important influence on the phonon density and maximum phonon energy of host glasses. Intense blue and weak red emissions centered at 477 and 650 nm, corresponding to the transitions 1G4-->3H6 and 1G4-->3H4, respectively, were observed at room temperature. The possible up-conversion mechanisms are discussed and estimated. With increasing halide content, the up-conversion luminescence intensity and blue luminescence lifetimes of Tm3+ ion increase notably. Our results show that with the substitution of halide ion for oxygen ion, the decrease of phonon density and maximum phonon energy of host glasses both contribute to the enhanced up-conversion emissions.</div>
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Structural and up-conversion luminescence properties in Tm3+/Yb3+-codoped heavy metal oxide-halide glasses.

Structural and up-conversion luminescence properties in Tm3+/Yb3+-codoped heavy metal oxide-halide glasses.

Source :

Descripteurs français

English descriptors

Abstract

Links toward previous steps (curation, corpus...)

Le document en format XML

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