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B and P Glass Formers as Stabilizers of Luminescent Ce(III) in Silica-Based Glasses

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Abstract

Ce3+-doped boro, phospho and borophosphosilicate monolithic glasses (BSG, PSG and BPSG) were prepared by sol-gel method. The inclusion of the glass formers P and B in silica lowered the tendency of rare earth (RE) to segregate as CeO2 with respect to pure SiO2 matrix (SG). In PSG and BPSG, Ce3+ co-ordination to P=O groups was responsible for the inhibition of both CeO2 segregation and oxidation of isolated Ce3+ ions to Ce4+. The better ion dispersion in the host matrix and the stabilization of Ce3+ oxidation state improved PSG and BPSG luminescence properties with respect to BSG and SG.

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Acknowledgments

The Authors thank MIUR (PRIN 2003) for the financial support

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Authors and Affiliations

  1. INSTM, Dept. Scienza dei Materiali, Univ. Milano-Bicocca, via Cozzi, 53, 20125, Milano, Italy

    C. Canevali, M. Mattoni, F. Morazzoni & R. Scotti

  2. Dept. Chimica Fisica, Univ. Ca’ Foscari, via Torino, 155/b, 30172, Venezia-Mestre, Italy

    R. Krsmanovic & S. Polizzi

  3. Dept. Scientifico e Tecnologico, Univ.Verona, strada le Grazie, 15, 37134, Verona, Italy

    M. Bettinelli & A. Speghini

Authors
  1. C. Canevali
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  2. M. Mattoni
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  3. F. Morazzoni
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  4. R. Scotti
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  5. R. Krsmanovic
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  6. S. Polizzi
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  7. M. Bettinelli
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  8. A. Speghini
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Canevali, C., Mattoni, M., Morazzoni, F. et al. B and P Glass Formers as Stabilizers of Luminescent Ce(III) in Silica-Based Glasses. MRS Online Proceedings Library 847, 12–17 (2004). https://doi.org/10.1557/PROC-847-EE13.41

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  • DOI: https://doi.org/10.1557/PROC-847-EE13.41

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