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Title: Structural characterization of nanocrystalline PbS thin films synthesized by CBD method
Authors: Choudhury, N
Sarma, B K
Keywords: Nanocrystalline;Chemical bath deposit;XRD;SEM;Thin film;Chemical bath deposition
Issue Date: Apr-2008
Publisher: CSIR
Abstract: Nanocrystalline PbS thin films have been deposited on glass substrates by Chemical Bath Deposition (CBD) technique using polyvinyl alcohol (PVA) in the preparation of matrix solution. Four matrix solutions with four different molarities (0.25 to 1.00) of lead acetate are used to deposit the films. The X-ray diffractograms of the samples show preferred orientation along (111) and (200) planes. The crystallite sizes of the films are found to vary from 2.0 to 4.4 nm. The crystallites are found to be under strain which varies between 1.33 × 10⁻¹ and 0.32 × 10⁻¹. The bandgaps of the nanocrystalline PbS are determined from UV spectrograph and are found to be with in the range 1.9-2.6 eV. The morphological properties of the films are determined by Scanning Electron Microscopy (SEM).
Page(s): 261-265
ISSN: 0019-5596
Appears in Collections:IJPAP Vol.46(04) [April 2008]

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