Effect of Deposition Voltage on Microstructure and Optical Properties of TiO_2 Thin Film via Electrophoretic Deposition

摘要

In this study nanocrystalline anatase TiO_2 thin films were prepared by electrophoretic deposition of titania sol at various applied voltages. The well-known sol-gel method was used to prepare the titania sol. The influence of applied voltage on the structure, morphology and optical properties of thin films has been characterized by X-ray diffraction, field emission scanning electron microscopy and UV-Vis spectroscopy. The results show that the thickness of the films formed on the substrate increases with increasing the applied voltage. However, with increasing the thickness of the films, the cracks increased and the transparency reduced in the visible region.