Luminescence characteristics of Te- and Bi-doped glasses and glass-ceramics
Luminescence characteristics of Te- and Bi-doped glasses and glass-ceramics
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DOI：
10.2109/jcersj.115.259
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发表时间：
2007-04-01
影响因子：
1.1
通讯作者：
Ohishi, Yasutake
中科院分区：
文献类型：
--
作者：
Khonthon, Sasithorn;Morimoto, Shigeki;Ohishi, Yasutake
研究了掺钛和双掺杂玻璃和微晶玻璃的发光特性，讨论了其显色和近红外发光的来源。这些玻璃和玻璃陶瓷的着色可能是由于元素聚集，如Te-2/Te2-和Bi-2/Bi2-。在掺钛和双掺杂的玻璃和玻璃陶瓷中可以检测到宽近红外（NIR）发光。在Te和bi掺杂的玻璃和玻璃陶瓷中观察到g近似于2.0的电子自旋共振（ESR）信号，因此该信号与近红外发光密切相关。g2.0时的ESR信号可能来源于Te和Bi分子离子Te-2（-）和Bi-2（-）。因此，我们认为掺Te和bi的玻璃和玻璃陶瓷的宽近红外发光很可能是由元素聚集引起的，如Te-2/Te2-和Bi-2/Bi2-。
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-.