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http://dx.doi.org/10.4191/KCERS.2002.39.3.252

Characterization of Transparent TiO2 Power and Thin Films through Sol-Gel Process  

Jung, Mie-Won (Department of Chemistry, Sungshin Women's University)
Lee, Zee-Young (Department of Chemistry, Sungshin Women's University)
Son, Hyun-Jin (Department of Chemistry, Sungshin Women's University)
Publication Information
Journal of the Korean Ceramic Society / v.39, no.3, 2002 , pp. 252-258 More about this Journal
Abstract
Transparent $TiO_2$ thin films prepared by sol-gel process using the modification of titanium(IV) alkoxide showed improved thermal stability and high refraction index. Compared to the pure $TiO_2$ film, the modified $TiO_2$ films show the increased index of refraction under proper condition at pH 2.5. Transparency of these $TiO_2$ thin films were more than 80% in the visible region. It has been demonstrated that the reaction occurs in the amorphous phase: an exchange of phase results in anatase before and after 400$^{\circ}C$, in rutile over 700$^{\circ}$C form the XRD results. The particle sizes, shapes and structures of these nanoclusters in the $TiO_2$ films have been identified through a SEM and XRD. The physical properties and structures of their powders have also been studied through a SEM, XRD, TGA and DSC. The thickness and index of refraction have been determined by the analysis of ellipsometric spectra.
Keywords
Titanium dioxide; Thin film; Index of refraction; Transparency; Sol-gel Process;
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