Six heavy germanate glasses containing GeO2, Gd2O3, BaO, SnO2and La2O3are prepared. Ultraviolet and visible transmission spectra are measured and compared. Special attention is paid to the UV absorption edges of these glasses which prove moderate and suitable for hosting scintillating Ce3+activators. Red shifts of UV absorption bands assigned to the solute Sn2+and Ce3+in these glasses are observed. Reasonable explanations are given from the viewpoint of different mechanisms of UV absorption referring to the different types of metal ions existing in the glass network. The relationship between such red shift and compositions of glass matrices is fully discussed in terms of the so-called 'optical basicity' of glasses. © 2003 Elsevier B.V. All rights reserved.
All Science Journal Classification (ASJC) codes
- Electronic, Optical and Magnetic Materials
- Ceramics and Composites
- Condensed Matter Physics
- Materials Chemistry
Chen, G., Baccaro, S., Cecilia, A., Du, Y., Montecchi, M., Nie, J., ... Zhang, Y. (2003). Ultraviolet and visible transmission spectra of heavy germanate glasses containing Sn. Journal of Non-Crystalline Solids, 326-327, 343 - 347. https://doi.org/10.1016/S0022-3093(03)00430-7