Journal
SURFACE ENGINEERING
Volume 32, Issue 3, Pages 212-217Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1080/02670844.2015.1111559
Keywords
Thin films; X-ray diffraction; Optical band gap; Electrical resistivity
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Nanostructured ternary Zn-doped CdS (CdZnS) thin films were fabricated from fresh and aged (1, 2, 3 and 4 days) starting solutions by the spray pyrolysis technique using a perfume atomizer. X-ray diffraction studies showed that the films are polycrystalline in nature exhibiting hexagonal crystal structure with a (0 0 2) preferential orientation. SEM images showed that the film prepared from 1 day aged solution possesses randomly oriented CdS crystallites of elongated needle shape. The optical band gap values exhibit a red shift with aging time of the precursor solution. A minimum resistivity of 3.94 x 10(-3) Omega cm is obtained for the film prepared from 1 day aged solution. The obtained results infer that the CdZnS film prepared from 1 day aged solution exhibits better physical properties.
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