Cuprous oxide thin films were successfully grown on indium tin oxide (ITO) coated glass by sol-gel spin coating using diethanolamine (DEA) as a solubility agent. The films were annealed at 350 deg C in 5% H2+95% N2 atmosphere. The films were characterised by X-ray diffraction (XRD), scanning electron microscopy (SEM) and ultraviolet-visible (UV-vis) spectroscopy. The effect of spinning rate on deposition on the microstructure, thickness and optical properties of cuprous oxide films was investigated. based on the SEM micrographs of the as obtained films, it was found that the grain size decreases with the increase in spinning rate. At the rate of 6000rpm, the film shows better coverage when the rounded shape grain size is about 45nm. Optical absorbence of the films was in the regions of 400-800nm wavelengths.
