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SPECTROSCOPIC CHARACTERIZATION OF CHEMICAL BATH DEPOSITED CADMIUM SULPHIDE LAYERS

R. Grecu1,* , E. J. Popovici1, M. Ladar1, L. Pascu1, E. Indrea2

Affiliation

  1. “Raluca Ripan” Institute for Research in Chemistry, Fântânele 30, P.O. Box 702, R-3400 Cluj-Napoca
  2. National Institute for R&D of Isotopic and Molecular Technologies, Donath 30; R-3400 Cluj-Napoca

Abstract

Thin films of cadmium sulphide have been prepared by chemical bath deposition in alkaline ammonia solutions from cadmium acetate and thiourea, using sodium citrate and/or ammonium chloride as chelating agent. The films grown from the bath without citrate are uniform and adherent, have a high transmittance and good reflectance in the visible region, and are about 2 times thicker than the films deposited from the „standard” bath. The evolution of optical characteristics of CdS films after annealing process was influenced by the deposition conditions..

Keywords

CdS, Thin films, Chemical bath deposition, Transmittance spectra, Reflectance spectra.

Submitted at: Jan. 8, 2004
Accepted at: March 15, 2004

Citation

R. Grecu, E. J. Popovici, M. Ladar, L. Pascu, E. Indrea, SPECTROSCOPIC CHARACTERIZATION OF CHEMICAL BATH DEPOSITED CADMIUM SULPHIDE LAYERS, Journal of Optoelectronics and Advanced Materials Vol. 6, Iss. 1, pp. 127-132 (2004)