Silica glass with SnO<sub>2</sub> nanocrystals and Er<sup>3+</sup> ions are prepared by the sol-gel route and treatment above 1000 °C. Transmission electron microscopy evidences a homogeneous dispersion of nanoclusters 4-6 nm in size in the amorphous silica matrix. Photoluminescence spectra excited at 3.5 eV, outside erbium transitions, show an inhomogeneous spectral distribution of light emission from interface defects, in the range 1.9-2.4 eV, resonant with transitions of erbium ions. The analysis of kinetics and temperature dependence of luminescence allows to quantify the efficiency of the energy transfer channel between nanoclusters and erbium ions. © 2006 Elsevier Ltd. All rights reserved.
Brovelli, S., Chiodini, N., Lauria, A., Meinardi, F., Paleari, A. (2006). Kinetics of luminescence of interface defects and resonant Er3+ ions in nanostructured SnO2:SiO2. SOLID STATE COMMUNICATIONS, 138(12), 574-576 [10.1016/j.ssc.2006.04.035].
Kinetics of luminescence of interface defects and resonant Er3+ ions in nanostructured SnO2:SiO2
BROVELLI, SERGIO;CHIODINI, NORBERTO;MEINARDI, FRANCESCO;PALEARI, ALBERTO MARIA FELICE
2006
Abstract
Silica glass with SnO2 nanocrystals and Er3+ ions are prepared by the sol-gel route and treatment above 1000 °C. Transmission electron microscopy evidences a homogeneous dispersion of nanoclusters 4-6 nm in size in the amorphous silica matrix. Photoluminescence spectra excited at 3.5 eV, outside erbium transitions, show an inhomogeneous spectral distribution of light emission from interface defects, in the range 1.9-2.4 eV, resonant with transitions of erbium ions. The analysis of kinetics and temperature dependence of luminescence allows to quantify the efficiency of the energy transfer channel between nanoclusters and erbium ions. © 2006 Elsevier Ltd. All rights reserved.
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