ELECTROSYNTHESIS OF CDCR2S4 THIN-FILMS AND THEIR CHARACTERIZATION

Thin films of CdCr2S4 are electrosynthesized from an aqueous acidic ba th consisting of 0.05 M CdSO4-0.5 M Na2S2O3-2.5 M CrO3 onto stainless steel, indium-tin oxide coated glass and titanium substrates. The esti mated deposition potentials are found to be dependent on pH, temperatu re and composition of the bath. The XRD studies showed that the films are polycrystalline and of the composition corresponding to CdCr2S4. T he optical bandgap of CdCr2S4 is estimated to be 2.4 eV. The scanning electron microscopy study shows that the films are continuous. (C) 199 8 Elsevier Science S.A. All rights reserved.