Structural,Morphological and Optical Characterization of Tin Doped Zinc Oxide Thin Film by (SPT)

Thin films of tin doped zinc oxide (ZnO: Sn) with thickness 300 +/- 30 nm prepared by spray pyrolysis method at substrate temperatures of 400 degrees C. The structure, surface morphological and optical properties were studied, for Two weight ratios of doping (2 and 4) wt %. The results of X-Ray measurements showed that all deposit samples have a polycrystalline pattern with hexagonal wurtzite type structure. The films crystallites were oriented along (002) plane. The morphology measurements obtained by scanning electron microscope (SEM) showed that there is a change in the surface texture by the increasing of tin weight ratios with the rate of porosity of the surface when treating with 4wt %. The measurement of Atomic force microscopy (AFM) revealed nano particles sized and the roughness of the surface decrease to increase deflection, while optical measurements showed a decrease The energy gap of the models that are expected in the undoped samples.