Properties of CdS Thin Films Grown by Chemical Bath Deposition as a Function of Bath Temperature

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The present work deals with the preparation and characterization of cadmium sulfur (CdS) thin films. These films are prepared by chemical bath deposition on the well cleaned glass substrates. The thickness of the samples was measured by using profilometer DEKTAK, structural and optical properties were studied by X-ray diffraction analysis, and UV-visible spectrophotometry. The optical properties of the films have been investigated as a function of temperature. The band gap energy and Urbach energy were also investigated as a function of temperature. From the transmittance data analysis the direct band gap ranges from 2.21 eV to 2.34 eV. A dependence of band gap on temperature has been observed and the possible raisons are discussed. Transmission spectra indicates a high transmission coefficient (75 %). Structural analysis revealed that the films showed cubic structure, and the crystallite size decreased at a higher deposition temperature.

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Periodical:

Edited by:

N.Gabouze

Pages:

243-247

DOI:

10.4028/www.scientific.net/MSF.609.243

Citation:

H. Moualkia et al., "Properties of CdS Thin Films Grown by Chemical Bath Deposition as a Function of Bath Temperature", Materials Science Forum, Vol. 609, pp. 243-247, 2009

Online since:

January 2009

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$35.00

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