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Home  >  Journal list  >  Journal of the Ceramic Society of Japan  >  Vol.116  No.1355 (July) (2008)  >  pp.829-831

Journal of the Ceramic Society of Japan
<<Previous article Vol.116  No.1355 (July) (2008)   pp.829 - 831 Next article>>

On the near-infrared luminescence from TeO2 containing borate glasses

Sasithorn KHONTHON1), Penprapa PUNPAI1), Shigeki MORIMOTO1), Yusuke ARAI2), Takenobu SUZUKI2) and Yasutake OHISHI2)
1) School of Ceramic Engineering, Institute of Engineering, Suranaree University of Technology
2) Research Center for Advanced Photon Technology, Toyota Technological Institute


  The effects of melting temperature and glass composition on the Near-infrared (NIR) luminescent characteristics of Te-containing borate glasses are investigated and compared with previous works. Three absorption bands are detected at around ~370 nm, ~430 nm and ~530 nm, however, the absorption band at around ~600 nm could not be detected in all borate glasses. And no NIR luminescence was observed under the excitation of a 974 nm laser diode. The NIR luminescence was observed in Te-green and Te-purple glasses, which showed the absorption band at around ~600 nm. This absorption band was ascribed to 2Πg → 2Πu transition of Te2-. Consequently, it is suggested that the origin of NIR luminescence of Te-containing green and purple glass is likely to be caused by Te2- center. (Not to sure of the meaning of this sentence...)


Keyword:
Tellurium, Borate glass, Color center, NIR luminescence, Clusters

Received: October 03, 2007
Accepted: April 17, 2008 , Published online: July 01, 2008
Copyright (c) 2008 The Ceramic Society of Japan

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