STRUCTURAL, OPTICAL AND PHOTOELECTROCHEMICAL STUDIES OF THE CADMIUM-SULFIDE FILMS GROWN BY CHEMICAL BATH DEPOSITION

Cadmium sulphide films have been grown by chemical bath deposition usi ng an aqueous medium. Growth rate has been studied on the basis of the him thickness variation with deposition period. Structural investigat ion using XRD has shown the presence of polycrystalline deposits of wu rtzite structure. The optical absorbance has revealed that the band ga p of the CdS layers has been 2.39 eV. The CdS films have been employed in electrochemical photovoltaic cells of configuration glass/ITO/CdS/ /S2S22-//Ni to test their photoactivity. The solar cell parameters hav e been correlated with the growth parameters. (C) 1997 Elsevier Scienc e Ltd.