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Synthesis and Characterization of Cadmium Selenide Nanocrystalline Thin Films Prepared Using Novel Chemical Approach |
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PP: 53-57 |
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Author(s) |
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Smt. Swapna Samanta,
M. S. Shinde,
R. S. Patil,
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Abstract |
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| Chemical bath deposition, also known as solution growth technique, is presently attracting considerable attention. In this method, when cationic and anionic solution is mixed together and if ionic product exceeds or become equal to the solubility product, precipitation occurs as ions combine on the substrate and in the solution to form nuclei. It is relatively inexpensive, simple and convenience for large area deposition, where the precipitation is controlled through use of suitable metal complexing agents and the amount of anions in the bath is controlled through setting of appropriate chemical equilibrium. Cadmium Selenide thin films were deposited using Chemical bath deposition (CBD) method on glass substrate at room temperature. Characterization was done by x-ray diffraction method, the scanning electron microscope (SEM) and the energy dispersive x-ray analysis (E-DAX). X-ray diffraction study indicates the hexagonal structure. The band gap was found to be 1.82eV. The E-DAX peaks shows the presence of Cadmium, which is much more than Selenium, which implies that the CdSe films are rich in cations. |
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