Elsevier

Thin Solid Films

Volume 302, Issues 1–2, 20 June 1997, Pages 71-76
Thin Solid Films

Electrodeposition and optical characterisation of CdS thin films on ITO-coated glass

https://doi.org/10.1016/S0040-6090(96)09582-XGet rights and content

Abstract

Cadmium sulfide thin films have been deposited by electrodeposition using the potentiostatic method on indium tin oxide (ITO)-coated glass substrates from aqueous solution containing CdCl2 · 2H2O and Na2S2O3 at 90 °C. The depositions were carried out for various cathodic potentials. Good quality films were obtained at a cathodic potential of −0.6 V. Voltammograms have been recorded to optimize the co-deposition region of CdS on ITO-coated glass substrates at 90 °C. The structural and optical characterisations have been carried out using an X-ray diffractometer and UV—Vis spectrophotometry. Annealing the samples at 350 °C in H2 for 30 min resulted in increase in intensity as well as a shift towards lower scattering angles due to the lattice parameter increase from enlarged CdS cell. A bandgap narrowing was also observed as a consequence of annealing.

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