Author: Rizwan Zahid Zakaria Azmi Mohd Ghazali Mohd Sabri Jafari Atefeh Din Fasih Ud Zamiri Reza
Publisher: MDPI
E-ISSN: 1422-0067|12|2|1293-1305
ISSN: 1422-0067
Source: International Journal of Molecular Sciences, Vol.12, Iss.2, 2011-02, pp. : 1293-1305
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Abstract
Two different concentrations of CdCl2 and (NH2)2CS were used to prepare CdS thin films, to be deposited on glass substrate by chemical bath deposition (CBD) technique. CdCl2 (0.000312 M and 0.000625 M) was employed as a source of Cd2+ while (NH2)2CS (0.00125 M and 0.000625 M) for S2− at a constant bath temperature of 70 °C. Adhesion of the deposited films was found to be very good for all the solution concentrations of both reagents. The films were air-annealed at a temperature between 200 °C to 360 °C for one hour. The minimum thickness was observed to be 33.6 nm for film annealed at 320 °C. XRD analyses reveal that the films were cubic along with peaks of hexagonal phase for all film samples. The crystallite size of the films decreased from 41.4 nm to 7.4 nm with the increase of annealing temperature for the CdCl2 (0.000312 M). Optical energy band gap (
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