Abstract— Using chemical bath deposition (CBD) technique, (Cd-Zn)S:CdCl2 thin films were prepared on glass substrates. Room temperature photoluminescence analysis in the 400-700 nm emission wavelength ranges for the excitation energies 365nm show the ‘well known’ green emission band related to exciton-donor complexes formed in presence of S / excess Cd are observed in the PL emission spectra of various rare earth doped (Cd-Zn)S:CdCl2 films. In doped films, characteristic emissions of lanthanide such as Ce are observed. Some properties related to nanocrystalline effects are also found. The influence of variation of ratio of cadmium and sulphur was studied on the PL emission intensity of (Cd-Zn)S:CdCl2 thin films. In a selected ratio of cadmium and sulphur for which emission intensity was highest, the effect of impurity concentration on PL emission intensity was studied.
Keywords— Photoluminescence, Chemical Bath Deposition, Thin Films, CdS.
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