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Synthesis of Nanosilica Glass Activated by Erbium Ions, Spectroscopic studies | ||
| Iraqi Journal of Physics | ||
| Article 1, Volume 7, Issue 8, 2009, Pages 85-92 | ||
| Authors | ||
| Twej and Firas J. Al-maliki; Wesam A. A; Baha T. Chiad | ||
| Abstract | ||
| Erbium, as optical probe, doped silicate sol-gel glass with different Er concentrations was formed by wet chemical synthesis method using ethanol, water and tetraethaylorthosilicate [Si(OC2H5)4] precursor. Erbium ions were incorporated into silica sol-gel matrix via dissolution of Erbium chloride solution into the initial Si(OC2H5)4 precursor sol. Aluminum (Al) as a co-dopant was added to the final precursor in the form of Aluminum chloride (AlCl3) solution. The prepared samples were analyzed using atomic absorption analysis, X-ray diffraction and spectroscopic tests. The experimental results concerned with the transmission spectra suggest that the final samples have a good transparency and homogeneity. Also, the X-ray diffraction test showed that they have amorphous structure. The absorption and fluorescence spectra, as a function of Er concentration, were recorded at room temperature. Fluorescence emission of the 4I13/2→4I15/2 transition at ~ 1.536 µm was observed. In addition, the high values of peak emission cross-section, which were calculated as a function of Er concentration, suggest that the Er in the sol-gel may be favorable as optical material | ||
| Keywords | ||
| Erbium; silica sol; gel | ||
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