Surface-luminescence from thermally reduced bismuth-doped sodium aluminosilicate glasses

被引:15
作者
Nielsen, Karsten H. [2 ]
Smedskjaer, Morten M. [3 ]
Peng, Mingyeng [4 ,5 ]
Yue, Yuanzheng [3 ]
Wondraczek, Lothar [1 ,2 ]
机构
[1] Univ Jena, Otto Schott Inst, D-07743 Jena, Germany
[2] Univ Erlangen Nurnberg, Dept Mat Sci, Erlangen, Germany
[3] Aalborg Univ, Dept Biotechnol Chem & Environm Engn, Sect Chem, Aalborg, Denmark
[4] S China Univ Technol, Sch Mat Sci & Engn, State Key Lab Luminescent Mat & Devices, Guangzhou, Guangdong, Peoples R China
[5] S China Univ Technol, Sch Mat Sci & Engn, Inst Opt Commun Mat, Guangzhou, Guangdong, Peoples R China
关键词
Bismuth; Aluminosilicate; Luminescence; Near-infrared; Thermal reduction; INWARD CATIONIC DIFFUSION; LIME-SILICATE GLASS; INFRARED LUMINESCENCE; OPTICAL BASICITY; EMISSION CENTERS; NIR LUMINESCENCE; PHOTOLUMINESCENCE; FLUORESCENCE; GERMANATE; REDUCTION;
D O I
10.1016/j.jnoncrysol.2012.09.021
中图分类号
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号
0805 ; 080502 ;
摘要
We report on the effect of hydrogen annealing on the optical properties of bismuth-doped sodium aluminosilicate glasses. The redox state of bismuth in the as-melted glasses is governed by the composition, viz., NIR luminescence is observed only in the glasses with low optical basicity. Upon thermal reduction, visible emission from Bi3+ and, eventually, minor amounts of Bi2+ is significantly lowered, depending on heat-treatment time and temperature, and glass composition. Hydrogen treatment was also found to result in a decrease of the NIR emission intensity and, at the same time, formation of metallic bismuth particles in the surface region. Surface-tinting as well as the decrease of visible luminescence follow Arrhenian kinetics, suggesting that hydrogen permeation is the rate-governing process. Upon re-annealing in air, the effects of thermal reduction on the optical properties are reversible only to a limited extent. (C) 2012 Elsevier B.V. All rights reserved.
引用
收藏
页码:3193 / 3199
页数:7
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