Erbium-Doped Tin-Silicate Sol–Gel-Derived Glass-Ceramic Thin Films: Effect of Environment Segregation on the Er<SUP>3+</SUP> Emission - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Science of advanced materials Année : 2015

Erbium-Doped Tin-Silicate Sol–Gel-Derived Glass-Ceramic Thin Films: Effect of Environment Segregation on the Er3+ Emission

Résumé

A new class of glass-ceramic nanocomposite systems with a uniform distribution of SnO2 nanocrystals dispersed within an amorphous silica phase is fabricated in the form of thin films by using sol–gel processing. In this work, experiments with (100-x)SiO2-xSnO2 nanocomposite thin films with (x = 25 and 30 mol%) doped with Er3+ ions (concentrations of 0.5, 1 and 2 mol%) are presented. The focus has been both to determine the effect of rare-earth doping on the growth of SnO2 nanocrystals as well as the distribution of the Er3+ ions within the ceramic structure. Vibrational spectroscopic assessments have proven the glass-ceramic nature of the samples. EXAFS and photoluminescence spectra show that the rare-earth ions exist in both amorphous and crystalline phases. Moreover an energy transfer from SnO2 nanocrystals to erbium ions on excitation at 351 nm is demonstrated.
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Dates et versions

hal-01109887 , version 1 (27-01-2015)

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Tran T. T. Van, S. Turrell, B. Capoen, Lam Q. Vinh, O. Cristini-Robbe, et al.. Erbium-Doped Tin-Silicate Sol–Gel-Derived Glass-Ceramic Thin Films: Effect of Environment Segregation on the Er3+ Emission. Science of advanced materials, 2015, 7 (2), pp.301-308. ⟨10.1166/sam.2015.2022⟩. ⟨hal-01109887⟩
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