Optical Properties Of Pure TiO2 Films inlaid with SnO2 :ZnO

Abstract

In this work, the optical properties of titanium dioxide thin films (TiO2) inlaid with tin and zinc(SnO2 -ZnO) and in different weight ratios (0, 3, 5, 7) % were studied. The thin films were prepared using thermochemical spray technology on glass slides at a temperature of (350°C). The optical results revealed poor optical transmittance of unblemished TiO2 at the end of the ultraviolet spectrum followed by an increase, more than 47%, in the near-infrared spectrum. The thin TiO2 films revealed greater transparency with a blue shift in the absorption edge when the splicing increased by (SnO2 -ZnO) and a decrease in the absorption coefficient with the increase in the foil by (SnO2 -ZnO)According to the results of the electronic transition of the TiO2 , thin films have a direct and indirect energy gap, about (2.12eV and 3.2eV) respectively. An increase in both types of energy gap was observed with an increase in the concentration of distortion of (SnO2 -ZnO) In addition, there was also a significant decrease in the refractive index and inertia index with an increase in the concentration of the ratio of distortion in (SnO2 -ZnO) Keywords:TiO2,Thin Films, Spray pyrolysis, Energy gap,Structural properties , Optical properties