In this work, we studied deposited Cobalt- doped ZnO ( ZnO:Co ) thin films via dip-coating technique onto glass substrate, Zinc acetate dehydrate, cobalt acetate, methanol and ethanolamine were used as starting materials. Then we have characterized them UV- visible, scanning electron microscopy (SEM), atomic force microscopy (AFM ). It is found that all the thin films have good crystallinity and a preferential orientation crystallites a long [002] of ZnO with wurtzite structure. SEM and AFM have provided the information on morphology of this films where the size grain and average surface roughnes (Rms).

Key words : thin films, ZnO, Cobalt, dip-coating, XRD, UV-Visible.