Luminescence characteristics of Te- and Bi-doped glasses and glass-ceramics

被引：118
作者：
Khonthon, Sasithorn
Morimoto, Shigeki
Arai, Yusuke
Ohishi, Yasutake
机构：
[1] Suranaree Univ Technol, Sch Ceram Engn, Nakhon Ratchasima 30000, Thailand
[2] Toyota Technol Inst, Dept Future Oriented Basci Sci & Mat, Tempaku Ku, Nagoya, Aichi 4688511, Japan
来源：
JOURNAL OF THE CERAMIC SOCIETY OF JAPAN | 2007年 / 115卷 / 1340期
关键词：
tellurium; bismuth; clustering; transparent glass-ceramics; absorption spectra; NIR luminescence; ESR;
D O I：
10.2109/jcersj.115.259
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：
The luminescence characteristics of Te- and Bi-doped glasses and glass-ceramics were investigated and the origin of coloration and near infrared luminescence was discussed. The colorations of these glasses and glass-ceramics might be due to the elemental clustering, such as Te-2/Te2- and Bi-2/Bi2-. The broad near infrared (NIR) luminescence can be detected in Te- and Bi-doped glasses and glass-ceramics. The electron spin resonance (ESR) signal at g approximate to 2.0 was observed in Te- and Bi-doped glasses and glass-ceramics, which exhibit NIR luminescence, and therefore this ESR signal is strongly related to the NIR luminescence. The ESR signal at g 2.0 might be derived from molecular ions of Te and Bi, Te-2(-) and Bi-2(-). Consequently, it is suggested that the broad NIR luminescence of Te- and Bi-doped glass and glass-ceramics are most likely to be caused by elemental clustering, such as Te-2/Te2- and Bi-2/Bi2-.
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页码：259 / 263
页数：5
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