Optical characterization of soda lime borosilicate glass doped with TiO2
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Publication Details
Author list: Ruengsri S., Kaewkhao J., Limsuwan P.
Publisher: Elsevier
Publication year: 2012
Volume number: 32
Start page: 772
End page: 779
Number of pages: 8
ISSN: 1877-7058
Languages: English-Great Britain (EN-GB)
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Abstract
In this work, TiO2 doped in soda lime borosilicate glasses were prepared with chemical compositions of 10Na2O: 30B2O 3: 10CaO: (50-x)SiO2: xTiO2 where x = 0.0, 2.0, 4.0, 6.0, 8.0 and 10.0 mol, respectively, and investigated their physical and optical properties. The results showed that, density of glasses did not clearly depend on TiO2 concentration. The molar volumes were increased with increasing of TiO2 concentration, due to increase of nonbridging oxygen. The refractive indices were increased with increasing of TiO2 concentration. The absorption edge of undoped glass is occurred at the wavelength around 325 nm. It is also observed that the positions of absorption edge shift towards red as the content of TiO2 increases. The optical band gaps were slightly decreased with the increasing of TiO2 and results in the increase of bonding defect and non-bridging oxygen. This leads to an increase of the degree of localization of electrons thereby the increase of donor center in the glass matrix. ฉ 2010 Published by Elsevier Ltd.
Keywords
Borosilicate, Optical properties, Soda
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