Journal
APPLIED SURFACE SCIENCE
Volume 169, Issue -, Pages 476-479Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/S0169-4332(00)00732-7
Keywords
CdS thin films; evaporation; structural properties; optical properties; Raman scattering
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CdS thin films are deposited onto glass substrates by vacuum evaporation at 373 K and the films are annealed at different temperatures. Rutherford backscattering spectrometry (RBS) and X-ray diffraction techniques are used to determine the thickness, composition, crystalline structure and grain size of the films. The films show a predominant hexagonal phase with small crystallites. The optical band gap of the films are estimated using the optical transmittance measurements. A decrease in the band gap is observed for the annealed films. The Raman peak position of the CdS A(1) (LO) mode did not change much whereas, the full width at half maximum (FWHM) Is found to decrease with annealing. (C) 2001 Elsevier Science B.V. All rights reserved.
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