Comparison of CdS thin films prepared by different techniques for applications in solar cells as window materials

ILEPERUMA, O. A., VITHANA, C., PREMARATNE, K., AKURANTHILAKA, S. N., MCGREGOR, S. M. and DHARMADASA, I. M. (1998). Comparison of CdS thin films prepared by different techniques for applications in solar cells as window materials. Journal of Materials Science: Materials in Electronics, 9 (5), 367-372.

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Link to published version:: 10.1023/A:1008988227005

Abstract

CdS thin films as window materials for solar cells have been prepared by three procedures; chemical bath deposition, electrodeposition in an aqueous medium at 80 degrees C and electrodeposition in a non-aqueous medium at 170 degrees C. As deposited films along with those obtained after annealing in air at 400 degrees C for 15 min were studied using X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), glow discharge optical emission spectroscopy (GDOES), scanning electron microscopy (SEM), optical absorption spectra and photoelectrochemical spectroscopy (PEC) techniques under identical experimental conditions. X-ray diffraction data indicate the formation of hexagonal CdS as the predominent phase, but the SEM studies show that their textures are widely dependent on the conditions employed. GDOES profiling indicates the incorporation of Na and Si into CdS films prepared by all three techniques. Annealing of chemical bath deposited films causes a red shift of the absorbance edge and also a shift in the maxima of the photocurrent action spectra towards the low energy side. However, this effect was comparatively negligible for the samples prepared by the other two techniques. PEC studies indicate that CdS materials grown by all three techniques are all n-type. All studies indicate that the films grown at 170 degrees C using non-aqueous solutions are of better crystallinity and of improved electrical properties. (C) 1998 Kluwer Academic Publishers.

Item Type: Article
Research Institute, Centre or Group: Materials and Engineering Research Institute > Thin Films Research Centre > Electronic Materials and Sensors Research Group
Identification Number: 10.1023/A:1008988227005
Depositing User: Ann Betterton
Date Deposited: 08 Mar 2010 14:39
Last Modified: 08 Mar 2010 14:39
URI: http://shura.shu.ac.uk/id/eprint/1276

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