| 졸-겔법을 이용한 투과성 TiO2 분말 및 박막의 특성 연구 |
| 정미원, 이지영, 손현진 |
| 성신여자대학교 화학과 |
| Characterization of Transparent TiO2 Power and Thin Films through Sol-Gel Process |
| Mie-Won Jung, Zee-Young Lee, Hyun-Jin Son |
| Department of Chemistry, Sungshin Women's University |
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| ABSTRACT |
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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. |
| Key words:
Titanium dioxide, Thin film, Index of refraction, Transparency, Sol-gel Process |
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