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Comparison between the optical and surface properties of TiO2 and Ag/TiO2 thin films prepared by sol-gel process

  • Marcelo M. Viana (a1) and Nelcy D. S. Mohallem (a1)

Abstract

Colloidal precursor solutions, obtained from a mixture of titanium isopropoxide, isopropyl alcohol and silver nitrate, were used to fabricate amorphous TiO2 and Ag/TiO2 thin films by sol-gel process. The films were deposited on borosilicate substrates, which were heated at 400 °C for 30 minutes and cooled rapidly to the formation of amorphous coatings. The films were investigated by X-ray diffraction, scanning electron microscopy, atomic force microscopy and UV-vis spectroscopy. The thickness, roughness, refraction index, and particle size of the TiO2 and Ag/TiO2 films were determined and compared. Finally, hydrophobic-hydrophilic property was evaluated to the thin films produced.

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Keywords

Comparison between the optical and surface properties of TiO2 and Ag/TiO2 thin films prepared by sol-gel process

  • Marcelo M. Viana (a1) and Nelcy D. S. Mohallem (a1)

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