Electrical,electrochemical and photo-electrochemical studies on the electrodeposited n-type semiconductor hexagonal crystalline CdS thin film on nickel substrate

Electrodeposited cadmium sulfide (CdS) on nickel substrate of new properties from aqueous solutions of Cd²⁺ and S₂O₃ ^2? at 313 K has been obtained using cyclic voltammetric and potentiostatic techniques. The mechanism of the electrode reactions for the electrodeposition of CdS has been evaluated and proposed. Energy dispersive X-ray florescence elemental analysis and X-ray diffraction investigations demonstrate that, the electrodeposited CdS is pure and hexagonal polycrystalline in nature, at our optimal conditions. Furthermore, the electrodeposited CdS is of n-type semiconductor was investigated and confirmed by Mott–Schotky test. Donor concentration (N_D) was determined to be 1.0 × 10¹⁷ cm^?3. In this research we discovered that, the electrodeposited semiconductor CdS on Ni substrate has low resistivity and magnetic properties (became as a strong magnet) at the mentioned conditions. The photoelectrochemical measurements of the electrodeposited CdS on nickel electrode had been investigated at room temperature and under illumination giving good results.