Abstract
Polyvinyl-alcohol (PVA) has been used as the matrix to synthesize ZnS /PVA composite films by means of the Chemical
method. The as-obtained films were characterized by X-ray diffraction (XRD), Transmission electron microscopy (TEM),
Atomic force microscopy (AFM), Ultraviolet–visible (UV–VIS) absorption, and photoluminescence (PL) spectra. The results
confirmed that the size of the as-synthesized ZnS nanoparticles depends on the amount of ZnCl2 salt. The
photoluminescence and UV–VIS spectroscopy revealed that the ZnS/PVA films showed quantum confinement effect. The
primary FTIR spectra of ZnS/PVA nanocomposite in different PVA:ZnCl2 have been discussed. The results indicate that the
introduction of ZnS decreased the degree of crystallinity of PVA.
Keywords
II–VI semiconductors, Nanocrystalline materials, Optical properties.
Citation
J. P. BORAH, K. C. SARMA, Photo-physical properties of of ZnS/PVA nanocrystals, Optoelectronics and Advanced Materials - Rapid Communications, 3, 9, September 2009, pp.891-898 (2009).
Submitted at: July 9, 2009
Accepted at: Sept. 15, 2009