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Sonochemical synthesis and measurement of optical properties of zinc sulfide quantum dots

Goharshadi, E. K ; Sharif University of Technology | 2012

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  1. Type of Document: Article
  2. DOI: 10.1016/j.cej.2012.07.131
  3. Publisher: 2012
  4. Abstract:
  5. A facile sonochemical method has been developed to prepare very small zinc sulfide nanoparticles (ZnS NPs) of extremely small size about 1. nm in diameter using a set of ionic liquids based on the bis (trifluoromethylsulfonyl) imide anion and different cations of 1-alkyl-3-methyl-imidazolium. The structural features and optical properties of the NPs were determined in depth with X-ray powder diffraction (XRD), transmission electron microscopy (TEM), high-resolution TEM (HRTEM), Fourier transform infrared (FTIR) spectroscopy, dynamic light scattering (DLS) analysis, and UV-vis absorption spectroscopy. The energy band gap measurements of ZnS NPs were calculated by UV-vis absorption spectroscopy. One of the interesting features of the present work is that the wide band gap semiconductor ZnS nanocrystals were prepared which are used in the fabrication of photonic devices
  6. Keywords:
  7. Band gap ; Ionic liquid ; Energy bandgaps ; High-resolution TEM ; Sonochemical method ; Sonochemical synthesis ; Structural feature ; Transmission electron microscopy (TEM) ; UV-Vis absorption spectroscopy ; Wide-band-gap semiconductor ; XRD ; Zinc sulfide nanoparticles ; ZnS nanocrystals ; Dynamic light scattering ; Energy gap ; Fourier transform infrared spectroscopy ; Ionic liquids ; Nanoparticles ; Optical properties ; Sonochemistry ; Sulfur compounds ; Transmission electron microscopy ; Ultraviolet spectroscopy ; X ray powder diffraction ; Zinc ; Zinc sulfide
  8. Source: Chemical Engineering Journal ; Volume 209 , 2012 , Pages 113-117 ; 13858947 (ISSN)
  9. URL: http://www.sciencedirect.com/science/article/pii/S1385894712010339