文献类型：会议论文

英文题名：Ultraviolet and visible transmission spectra of heavy germanate glasses containing Sn²⁺ and Ce³⁺

作者：Chen, GR; Baccaro, S; Cecilia, A; Du, YJ; Montecchi, M; Nie, JX; Wang, S; Zhang, YH

机构：[1]E China Univ Sci & Technol, Dept Inorgan Mat, Shanghai 200237, Peoples R China;[2]ENEA, FIS, ION, I-00060 Rome, Italy

会议论文集：13th International Symposium on Non-Oxide Glasses and New Optical Glasses

会议日期：SEP 09-13, 2002

会议地点：PARDUBICE, CZECH REPUBLIC

语种：英文

摘要：Six heavy germanate glasses containing GeO2, Gd2O3, BaO, SnO2 and La2O3 are 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. (C) 2003 Elsevier B.V. All rights reserved.