1 November 1997 Fluorescence and absorption probe of metal ion center in organically modified silicates
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Proceedings Volume 3176, Tunable Solid State Lasers; (1997) https://doi.org/10.1117/12.293458
Event: Tunable Solid State Lasers, 1996, Wroclaw, Poland
Abstract
An optical probe of structure of metal ion center in sol-gel systems based on the Eu3+ and Pr3+ emission and absorption measurements have been developed. It was tested how far the substrates affect the structure of metal centers in the glasses obtained by two different methods. Splitting of the levels, as well as their electronic transition probabilities at room and liquid nitrogen temperatures were used for considerations of the structure and symmetry of metal center. It was shown that the structure of metal centers was partially preserved up to 450 K. Correlation of the thermogravimetric measurements of substrates with the gels dried and heated up to 1100 K enables to control spectroscopically possible clustering processes occurring in sol-gel silicas. The effect of organic modification of water retention and dopant aggregation was investigated too.
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Wieslaw Strek, Wieslaw Strek, J. Sokolnicki, J. Sokolnicki, B. Keller, B. Keller, M. Borzechowska, M. Borzechowska, J. Legendziewicz, J. Legendziewicz, } "Fluorescence and absorption probe of metal ion center in organically modified silicates", Proc. SPIE 3176, Tunable Solid State Lasers, (1 November 1997); doi: 10.1117/12.293458; https://doi.org/10.1117/12.293458
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