Abstract
nTiO2–(100–n)SiO2 glasses (n =0.5, 1, 2, 3 and 5 wt %) were prepared by the sol–gel method. The photoluminescence (PL) properties of the glasses heat-treated at different temperatures were studied for the first time. A blue emission band centered at 445 nm was observed in all the samples. Their PL intensity strongly depends on the heat-treatment temperatures and the different TiO2 content. The PL intensity of all the samples is much stronger than that of pure SiO2 glass. The PL could be attributed to the luminescent centers associated with the defects in the sol–gel TiO2–SiO2 glass network. The heat-treatment and TiO2 content have an effect on the defect concentration and on the network completion and thus influence the emission.
Similar content being viewed by others
REFERENCES
Green, W.H., Le, K.L., Grey, J., et al., White Phosphors from a Silicate-Carboxylate Sol-Gel Precursor That Lack Metal Activator, Science, 1997, vol.276, no.20, pp.1826–1828.
Chiodini, N., Meinardi, F., Morazzoni, F., et al., Ultraviolet Photoluminescence of Porous Silica, Appl.Phys.Lett., 2000, vol.76, pp.3209–3211.
Carlos, L.D., Ferrerira, R.A.S., Orion, I., et al., Sol-Gel Derived Nanocomposite Hybrids for Full Colour Displays, J.Lumin., 2000, vols.87–89, pp.702–705.
Lin, J.and Baerner, K., Tunable Photoluminescence in Sol-Gel Derived Silica Xerogels, Mater.Lett., 2000, vol.46, no.2/3, pp.86–92.
Garcia, M.A., Paje, S.E., Villegas, M.A., et al., Characteristic UV Luminescence from Sol-Gel Silica Coatings, Mater.Lett., 2000, vol.43, no.1/2, pp.23–26.
Hinic, I.I., Stanisic, G.M., and Popovic, Z.V., Photoluminescence Properties of Silica Aerogel during Sintering Process, J.Sol-Gel Sci.Technol., 1999, vol.14, no.3, pp.281–289.
Yang, P., Song, C.F., Lu, M.K., et al., Defects and Photoluminescence of Ni2+; and Mn2+;-Doped Sol-Gel SiO2; Glass, J.Solid State Chem., 2001, vol.160,no.1, pp.272–277.
Yoldas, B.E., Formation of Titania-Silica Glasses by Low Temperature Chemical Polymerization, J.Non-Cryst.Solids, 1980, vol.38/39, pp.81–86.
Yamane, M., Inone, S., and Nakarawa, K., Preparation of Gels to Obtain Glasses of High Homogeneity by Low Temperature Synthesis, J.Non-Cryst.Solids, 1982, vol.48, pp.153–159.
Emili, M., Incoccia, L., Mobilio, S., et al., Structure Investigations of TiO2;-SiO2; Glassy and Glass-Ceramic Materials Prepared by the Sol-Gel Method, J.Non-Cryst.Solids, 1985, vol.74, pp.129–146.
Salvado, I.M.M., TiO2;-SiO2; Glasses Prepared by the Alkoxide Route, J.Non-Cryst.Solids, 1992, vol.147/148, pp.256–261.
Yu, H.F.and Wang, S.M., Effect of Water Content and pH on Gel-Derived TiO2;-SiO2;, J.Non-Cryst.Solids, 2000, vol.261, nos.1–3, pp.260–267.
Martins, O.and Almeida, R., Sintering Anomaly in Silica- Titania Sol-Gel Films, J.Sol-Gel Sci.Technol., 2000, vol.19, nos.1–3, pp.651–655.
Garcia, M.A., Borsella, E., Paje, S.E., et al., Luminescence Time Decay from Cu1+; Ions in Sol-Gel Silica Coatings, J.Lumin., 2001, vol.93, no.3, pp.253–259.
Okuzaki, S., Okude, K., and Ohishi, T., Photoluminescence Behavior of SiO2; Prepared by Sol-Gel Processing, J.Non-Cryst.Solids, 2000, vol.265, no.1/2, pp.61–67.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Song, C.F., Lü, M.K., Wang, S.F. et al. Blue Photoluminescence of Sol–Gel TiO2–SiO2 Glass. Inorganic Materials 39, 1326–1328 (2003). https://doi.org/10.1023/B:INMA.0000008923.96051.18
Issue Date:
DOI: https://doi.org/10.1023/B:INMA.0000008923.96051.18