Strong visible up-conversion emission in Tb3+, Tm3+ and Tb3+-Tm3+ co-doped tellurite glasses sensitized by Yb3+.
Identifieur interne : 000633 ( PubMed/Curation ); précédent : 000632; suivant : 000634Strong visible up-conversion emission in Tb3+, Tm3+ and Tb3+-Tm3+ co-doped tellurite glasses sensitized by Yb3+.
Auteurs : Xunsi Wang [République populaire de Chine] ; Liren Liu ; Qiuhua Nie ; Tiefeng Xu ; Xiang Shen ; Shixun Dai ; Xianghua ZhangSource :
- Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy [ 1386-1425 ] ; 2007.
Descripteurs français
- KwdFr :
- MESH :
English descriptors
- KwdEn :
- MESH :
- chemical , chemistry : Tellurium, Terbium, Thulium, Ytterbium.
- chemical : Ions.
- chemistry : Glass.
- methods : Spectrophotometry.
- Luminescence, Time Factors.
Abstract
Up-conversion luminescence characteristics under 975 nm excitation have been investigated with Tb3+/Tm3+/Yb3+ triply doped tellurite glasses. Here, green (547 nm: (5)D(4)-->(7)F(4)) and red (660 nm: (5)D(4)-->(7)F(2)) up-conversion (UC) luminescence originating from Tb3+ is observed strongly, because of the quadratic dependences of emission intensities on the excitation power. Especially, the UC luminescence was intensified violently with the energy transfer from the Tm3+ ions involves in the Tb3+ excitation. To the Tb3+/Tm3+/Yb3+ triply doped glass system, a novel up-conversion mechanism is proposed as follows: the energy of (3)G(4) level (Tm3+) was transferred to (5)D(4) (Tb(3+)) and the 477-nm UC luminescence of Tm3+ was nearly quenched.
DOI: 10.1016/j.saa.2006.09.023
PubMed: 17110158
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pubmed:17110158Le document en format XML
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<term>Spectrophotometry (methods)</term>
<term>Tellurium (chemistry)</term>
<term>Terbium (chemistry)</term>
<term>Thulium (chemistry)</term>
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<keywords scheme="KwdFr" xml:lang="fr"><term>Facteurs temps</term>
<term>Ions</term>
<term>Luminescence</term>
<term>Spectrophotométrie ()</term>
<term>Tellure ()</term>
<term>Terbium ()</term>
<term>Thulium ()</term>
<term>Verre ()</term>
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<term>Luminescence</term>
<term>Spectrophotométrie</term>
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<front><div type="abstract" xml:lang="en">Up-conversion luminescence characteristics under 975 nm excitation have been investigated with Tb3+/Tm3+/Yb3+ triply doped tellurite glasses. Here, green (547 nm: (5)D(4)-->(7)F(4)) and red (660 nm: (5)D(4)-->(7)F(2)) up-conversion (UC) luminescence originating from Tb3+ is observed strongly, because of the quadratic dependences of emission intensities on the excitation power. Especially, the UC luminescence was intensified violently with the energy transfer from the Tm3+ ions involves in the Tb3+ excitation. To the Tb3+/Tm3+/Yb3+ triply doped glass system, a novel up-conversion mechanism is proposed as follows: the energy of (3)G(4) level (Tm3+) was transferred to (5)D(4) (Tb(3+)) and the 477-nm UC luminescence of Tm3+ was nearly quenched.</div>
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<Abstract><AbstractText>Up-conversion luminescence characteristics under 975 nm excitation have been investigated with Tb3+/Tm3+/Yb3+ triply doped tellurite glasses. Here, green (547 nm: (5)D(4)-->(7)F(4)) and red (660 nm: (5)D(4)-->(7)F(2)) up-conversion (UC) luminescence originating from Tb3+ is observed strongly, because of the quadratic dependences of emission intensities on the excitation power. Especially, the UC luminescence was intensified violently with the energy transfer from the Tm3+ ions involves in the Tb3+ excitation. To the Tb3+/Tm3+/Yb3+ triply doped glass system, a novel up-conversion mechanism is proposed as follows: the energy of (3)G(4) level (Tm3+) was transferred to (5)D(4) (Tb(3+)) and the 477-nm UC luminescence of Tm3+ was nearly quenched.</AbstractText>
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