Erbium-Doped Tin-Silicate Sol–Gel-Derived Glass-Ceramic Thin Films: Effect of Environment Segregation on the Er<SUP>3+</SUP> Emission (CROSBI ID 255786)
Prilog u časopisu | izvorni znanstveni rad | međunarodna recenzija
Podaci o odgovornosti
Van, Tran T. T. ; Turrell, S. ; Capoen, B. ; Vinh, Lam Q. ; Cristini-Robbe, O. ; Bouazaoui, M. ; d'Acapito, F. ; Ferrari, Maurizio ; Ristić, Davor ; Lukowiak, Anna. ; Almeida, R. ; Santos, L. ; Kinowski, C.
engleski
Erbium-Doped Tin-Silicate Sol–Gel-Derived Glass-Ceramic Thin Films: Effect of Environment Segregation on the Er<SUP>3+</SUP> Emission
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.
Er3+ ions ; EXAFS measurement ; photoluminescence spectroscopy ; Raman spectroscopy ; SiO2–SnO2 thin films
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