Abstract
Monolithic silica xerogels doped with different concentrations of Er3+, Yb3+ and Al3+ were prepared by sol-gel route. Densification was achieved by thermal treatment in air at 950°C for 120 h with a heating rate of 0.1°C/min. We studied the luminescence properties of the 4I13/2 → 4I15/2 emission band of Er3+ as a function of the Al/Er/Yb concentration and we paid particular attention to the alumina effects. Raman spectroscopy and Vis-NIR absorption were used to monitor the degree of densification of the glasses and the residual OH content.
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Chiasera, A., Montagna, M., Rolli, R. et al. Er3+/Yb3+ Co-Activated Silica-Alumina Monolithic Xerogels. Journal of Sol-Gel Science and Technology 26, 943–946 (2003). https://doi.org/10.1023/A:1020744926382
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DOI: https://doi.org/10.1023/A:1020744926382