Study on the Effect of Different Amount of Titanium Dioxide Nano-Powder to the Nano-Structured Titanium Dioxide Thin Films

Nanostructured Titanium Dioxide (TiO₂) thin film with additional various amount of TiO2 nanopowder has been successfully prepared using sol-gel spin coating method. The amounts of TiO₂ nanopowders are varied at 0.02 g, 0.04 g, 0.06 g, 0.08 g, 0.10 g and 0.12 g, respectively. The effects of different amount of Titanium Dioxide nanopowder to the structural, electrical and optical properties have been studied. The effects of different amount of nano-powder TiO₂ were characterized using X-Ray Diffractometer (XRD), 2-point probe I-V measurement and UV-Vis-NIR Spectrophotometer. For electrical properties, O.1 g of TiO₂ nanopowder gives the lowest sheet resistance among other nanostructured TiO₂ thin film. As for XRD data, all thin films are in crystalline anatase form which can observe at 2θ degree 25.6° for [101]. As the amount TiO₂ nanopowder increased at 0.10 g and 0.12 g, new crystalline anatase phase can be observed at 2θ degree 48.6° for [200]. All TiO₂ thin films also exhibited optical transmittance over 69% with wavelength range from 200 nm to 1000 nm.