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

Canevali, C., Mattoni, M., Morazzoni, F., Scotti, R., Krsmanovic, R., Polizzi, S., et al. (2005). B and P Glass Formers as Stabilizers of Luminescent Ce(III) in Silica-Based Glasses. In Organic/Inorganic Hybrid Materials-2004 (pp.87-92).

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

CANEVALI, CARMEN;MATTONI, MARIACHIARA;MORAZZONI, FRANCA;SCOTTI, ROBERTO;
2005

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
No
paper
Scientifica
Luminescence, glass, glass formers, boron, phpsphorus, cerium,
English
Symposium on Organic-Inorganic Hybrid Materials held at the 2004 MRS Fall Meeting NOV 29-DEC 03
1-55899-795-4
Canevali, C., Mattoni, M., Morazzoni, F., Scotti, R., Krsmanovic, R., Polizzi, S., et al. (2005). B and P Glass Formers as Stabilizers of Luminescent Ce(III) in Silica-Based Glasses. In Organic/Inorganic Hybrid Materials-2004 (pp.87-92).
Canevali, C; Mattoni, M; Morazzoni, F; Scotti, R; Krsmanovic, R; Polizzi, S; Bettinelli, M; Speghini, A
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/10281/23896
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