Optical properties of ZnS nanoparticles produced by mechanochemical method

C. S. Pathak, D. D. Mishra, V. Agarwala, M. K. Mandal

Research output: Contribution to journalArticlepeer-review

34 Scopus citations

Abstract

Nanosized zinc sulfide (ZnS) has been synthesized by the mechanochemical route using zinc acetate and sodium sulfide as source materials in a high energy planetary ball mill (HEPBM) with 300 rpm for 2 h. The mechanochemically synthesized powders have been analyzed by X-ray diffraction (XRD) for phase analysis, Field Emission Scanning Electron Microscope (FESEM) for the morphological characterization, UV-vis-NIR spectrophotometer for determining band gap energy and Fluorescence spectroscopy for determining the emission wavelength. The crystallite size of the synthesized ZnS nanoparticles calculated by the Debye-Scherers formula is in the range 7-9 nm. FESEM morphology shows the fibrous structure of ZnS samples. The value of optical band gap has been found to be in the range 5.2-5.3 eV. Room temperature photoluminescence (PL) spectrum of the samples exhibits a blue light emission using UV excitation wavelength of 280 nm.

Original languageEnglish
Pages (from-to)6191-6195
Number of pages5
JournalCeramics International
Volume38
Issue number8
DOIs
StatePublished - 1 Dec 2012
Externally publishedYes

Keywords

  • C. Optical properties
  • Mechanochemistry
  • Nanoparticles
  • Semiconductors

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Ceramics and Composites
  • Process Chemistry and Technology
  • Surfaces, Coatings and Films
  • Materials Chemistry

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