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Comparative Study Of CdS Thin Films Fabricated By A Simplified Spray Technique using Two Cationic Precursor Salts With Different Stability Constants |
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PP: 93-106 |
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Author(s) |
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M. Anbarasi,
A. R. Balu,
V. S. Nagarethinam,
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Abstract |
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| Cadmium sulphide (CdS) thin films were prepared by a low cost simplified spray technique using perfume atomizer on glass substrates at 325ºC using two different cationic precursors: cadmium acetate and cadmium chloride. The effect of cationic precursors on the structural, morphological, optical and electrical properties was studied. Structural studies reveal that the films are polycrystalline in nature with a mixture of both cubic and hexagonal phases with hexagonal phase being predominant irrespective of the precursor used. The preferential orientation factor f(h k l) of CdCl2 based film is high compared to that of Cd(CH3COO)2 based film. Grain size value were found to be equal to 21.33 nm and 32.63 nm for Cd(CH3COO)2 and CdCl2 based CdS films respectively. The optical transmittance in the visible range was found to be > 85 % for both the films. The specular reflectance values for both the films are very low. High transmittance and low reflectance values obtained for the films makes them suitable as antireflecting coating materials for thin film solar cells. |
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