Spectroscopic properties of Er3+/Yb3+ co-doped 50SiO2-20Al2O3-30CaF2 glass and glass ceramics - Université de Rennes Accéder directement au contenu
Article Dans Une Revue Journal of Physics: Condensed Matter Année : 2006

Spectroscopic properties of Er3+/Yb3+ co-doped 50SiO2-20Al2O3-30CaF2 glass and glass ceramics

Résumé

A spectroscopic investigation of Er3+/Yb3+ co-doped 50SiO2-20Al2O3-30CaF2 glasses and transparent glass ceramics containing CaF2 nanocrystals is presented. The formation of CaF2 nanocrystals in the glass ceramic was confirmed by x-ray diffraction (XRD) and transmission electron microscopy (TEM). The Judd-Ofelt parameters of the Er3+ ions in the glass and glass ceramic have been calculated; they suggested that Er3+ ions had been incorporated into CaF2 nanocrystals in the glass ceramics. The upconversion luminescence intensity of the Er3+/Yb3+ co-doped glass ceramic was much stronger than that of the Er3+/Yb3+ co-doped glass. The upconversion luminescence mechanism has been ascribed to a two-photon absorption process for the green and red luminescence and a three-photon absorption process for the blue luminescence.
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hal-00867503 , version 1 (30-09-2013)

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Xvsheng Qiao, Xianping Fan, Minqiang Wang, Jean-Luc Adam, Xianghua Zhang. Spectroscopic properties of Er3+/Yb3+ co-doped 50SiO2-20Al2O3-30CaF2 glass and glass ceramics. Journal of Physics: Condensed Matter, 2006, 18 (29), pp.6937-6951. ⟨10.1088/0953-8984/18/29/030⟩. ⟨hal-00867503⟩
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