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Bulletin of the Korean Chemical Society (BKCS)

ISSN 0253-2964(Print)
ISSN 1229-5949(Online)
Volume 21, Number 12
BKCSDE 21(12)
December 20, 2000 

 
Title
The Effect of Processing Variables on Structural Changes and Optical Properties of SiO2-TiO2 Sol-Gel Derived Films
Author
Chin Myung Whang, Seong Su Lim
Keywords
Abstract
The structural evolution during the thermal treatment of 70SiO₂-30TiO₂ (mole%) sol-gel derived powders and films was investigated by FT-IR, Raman and XPS, and XRD. From these results, the TiO₂-rich regions involving Ti4+ ions in octahedral coordination were confirmed to be amorphous at 600 ℃. However, Raman spectra along with XRD patterns indicated that at high temperature (above 700 ℃), the amorphous TiO₂ was segregating to form anatase crystal. Also, the effect of experimental variables such as thermal treatment, heating rate and exposure to water vapor on structural changes, refractive index and thickness of the film coated on soda-lime-silicate glass were investigated.
Page
1181 - 1186
Full Text
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