Films of SnO₂-ZnO nano composites were produced by spray pyrolysis (SP) on a glass substrate that had been heated to 250 °C. Utilising a solution mixture of AR grade zinc acetate dehydrate and tin chloride dehydrate in deionised water with varying concentrations of tin chloride dehydrate (while maintaining a concentration of 0.05 M for zinc acetate dihydrate), the effect of thickness on structural, microstructural, and electrical properties on thin films was investigated. In order to determine the crystal structure, surface morphology, microstructural properties, and elemental composition of the produced thin films, various analytical techniques, including XRD, SEM, TEM, and EDAX, were used. Thickness of deposited SnO₂-ZnO films was calculated and found to be 190 nm, 231 nm and 361 nm with respect to the samples S1, S2 and S3. As the thickness increases, the FWHM value goes down and texture coefficient (TC) goes up which means that the films are more crystalline. The grain size was found to be between 29 and 35 nm. TEM images show that the average grains are nanocrystalline. The SnO₂-ZnO nanocomposites films were seen to be the n-type material. Average grain size and texture coefficients were found to rise with film thickness, while micro stain, standard deviation, and activation energy values decreased. The findings are examined and analysed.

Keywords: TEP; Spray Pyrolysis; Nanocomposites; SnO₂-ZnO Thin Film;