The thin films of CdxZn1-xS, where x vary: 0.1, 0.3, 0.5, 0.7 and 0.9, have been synthesised by the spin coating technique using a ZnO nanorods/ITO glass as a substrate. The properties of structural, optical and photoelectrochemical have been studied. The pattern of X-ray diffraction of the optimum film Cd0.9Zn0.1S/ZnO NRs shows polycrystalline in nature and it has the favourite orientation laterally the (002) plane. The absorption edges of absorbance spectra of different x (CdxZn1-xS) shifts towards lower wavelength with the increase in Zn concentration and these spectra were utilized in determining energy bandgap. Investigation indicated that the bandgap value increases with an increase in Zn content. The result disclosed an acceptable improvement in the photocurrent density of Cd0.9Zn0.1S/ZnO NRs (0.47 mA/cm2) that was around 12 times greater than ZnO NRAs (0.04 mA/cm2).
