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Home  >  Journal list  >  Journal of the Ceramic Society of Japan  >  Vol.121  No.1411 (March) (2013)  >  pp.299-302

Journal of the Ceramic Society of Japan
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Cosolvent-free sol–gel synthesis of rare-earth and aluminum codoped monolithic silica glasses

Ken KANEKO1), Koichi KAJIHARA1), Kiyoshi KANAMURA1)
1) Department of Applied Chemistry, Graduate School of Urban Environmental Sciences, Tokyo Metropolitan University

A cosolvent-free sol–gel method to synthesize monolithic silica glasses containing both of rare-earth and aluminum ions has been studied. Fracture during drying and bloating during sintering are significantly suppressed by forming macroporous wet gels via macroscopic phase separation in parallel with gelation. The resultant rare-earth and aluminum codoped silica glasses exhibit good visible transparency, suggesting an improvement of dispersion of rare-earth ions in these glasses. The aluminum codoping increases the photoluminescence efficiency in glasses doped with Nd3+ ions.


Keyword:
Sol–gel method, Silica glass, Rare-earth aluminum codoping

Received: October 01, 2012
Accepted: December 15, 2012 , Published online: March 01, 2013
Copyright © 2013 The Ceramic Society of Japan

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