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International Journal of Photoenergy
Volume 2006, Article ID 24279, 5 pages

Inverted opal luminescent Ce-doped silica glasses

1INSTM, Dipartimento di Scienza dei Materiali, Università degli Studi di Milano-Bicocca, via Cozzi 53, Milano 20125, Italy
2INSTM, Dipartimento di Chimica Fisica, Università di Ca' Foscari, via Torino 155/b, Venezia-Mestre 30172, Italy
3INSTM, Dipartimento di Scientifico e Tecnologico, Università degli Studi di Verona, Strada le Grazie 15, Verona 37134, Italy

Received 14 February 2006; Accepted 9 May 2006

Copyright © 2006 R. Scotti et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Inverted opal Ce-doped silica glasses (Ce:Si molar ratio 1103 were prepared by a sol-gel method using opals of latex microspheres as templates. The rare earth is homogeneously dispersed in silica host matrix, as evidenced by the absence of segregated CeO2, instead present in monolithic Ce-doped SG with the same cerium content. This suggests that the nanometric dimensions of bridges and junctions of the host matrix in the inverted opal structures favor the RE distribution avoiding the possible segregation of CeO2.