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

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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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Keywords: ER3+ IONS; EXAFS MEASUREMENT; PHOTOLUMINESCENCE SPECTROSCOPY; RAMAN SPECTROSCOPY; SIO2–SNO2 THIN FILMS

Document Type: Research Article

Publication date: February 1, 2015

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  • Science of Advanced Materials (SAM) is an interdisciplinary peer-reviewed journal consolidating research activities in all aspects of advanced materials in the fields of science, engineering and medicine into a single and unique reference source. SAM provides the means for materials scientists, chemists, physicists, biologists, engineers, ceramicists, metallurgists, theoreticians and technocrats to publish original research articles as reviews with author's photo and short biography, full research articles and communications of important new scientific and technological findings, encompassing the fundamental and applied research in all latest aspects of advanced materials.
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