In this paper, the CZO and IZO thin films were deposited on glass substrate by ultrasonic spray technique; ata substrate temperature of 350°C, we have studied the
effect of the doping concentration on structural, optical,
and electrical properties of ZnO thin films. The main
goal for this research is to find the optimum doping concentration which gives highly semiconducting properties
of ZnO:Co and ZnO:In thin films.