Strong visible up-conversion emission in Tb3+, Tm3+ and Tb3+-Tm3+ co-doped tellurite glasses sensitized by Yb3+. - Université de Rennes Accéder directement au contenu
Article Dans Une Revue Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy [1994-...] Année : 2007

Strong visible up-conversion emission in Tb3+, Tm3+ and Tb3+-Tm3+ co-doped tellurite glasses sensitized by Yb3+.

Résumé

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.

Domaines

Matériaux

Dates et versions

hal-00865623 , version 1 (24-09-2013)

Identifiants

Citer

Xunsi Wang, Liren Liu, Qiuhua Nie, Tiefeng Xu, Xiang Shen, et al.. Strong visible up-conversion emission in Tb3+, Tm3+ and Tb3+-Tm3+ co-doped tellurite glasses sensitized by Yb3+.. Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy [1994-..], 2007, 67 (3-4), pp.1025-9. ⟨10.1016/j.saa.2006.09.023⟩. ⟨hal-00865623⟩
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