Effect of Preparation Method on the Physical Properties of SnO2 Thin Films

Thin films of tin oxide SnO2 were prepared using chemical bath deposition CBD and spray pyrolysis method, the films have been examined using different techniques to investigate the optical, structural and electrical properties of them. The scanning electron microscope and x ray spectroscopy Show that the both films are amorphous and grain size within the nanoscale, where the grain size for the films prepared by CBD method was about 70nm while it was about 58nm for the films prepared by spray pyrolysis method. The energy gap also affected by the deposition method, where it was about 2.1eV and 2.3 eV for the films prepared by CBD and spray pyrolysis methods respectively.