Analysing the Color Properties of Sol-gel Prepared Copper Oxide Thin Films

This research presented a study of the effect of annealing time at temperatures400      and 500°C on the Color properties of copper oxide films prepared using the sol-gel technique, and tests were conducted on them XRD, UV-visible and hall effect. .X-ray diffraction patterns showed the CuO, and the material was well crystalline. Visual tests showed that the transmittance was 85% at 500° C in the visible region. Color values were observed using the CIELAB colorimetric method, and two important color characteristics were measured: the color angle, which ranged between (25.54°-27.29°) and Chrome which was between (72.09 -74.15). The results of electrical measurements confirmed that the conductivity of the thin films increases with increasing annealing temperatures and that all thin films are of the p-type.