Abstract
CdS and chlorine doped CdS (CdS:Cl) thin films with different Cl-doping levels (0, 2, 4, 6 and 8at%) have been deposited on glass substrates by a spray pyrolysis technique using a perfume atomizer. The effect of Cl doping on the structural, morphological, optical and electrical properties of the films was investigated. XRD patterns revealed that all the films exhibit hexagonal crystal structure with a preferential orientation along the (0 0 2) plane irrespective of the Cl doping level. The particle size value decreases from 22.03nm to 18.12nm with increase in Cl concentration. Optical band gap is blue-shifted from 2.48eV to 2.73eV with increase in Cl doping concentration. All the films have resistivity in the order of 104Ωcm. The obtained results confirm that chlorine as an anionic dopant material can enhance the physical properties of CdS thin films to a large extent.
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More From: Progress in Natural Science: Materials International
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