Characterization and optical properties of Ni2+ doped ZnS nanoparticles

C. S. Pathak, P. K. Pathak, P. Kumar, M. K. Mandal

Research output: Contribution to journalArticlepeer-review

12 Scopus citations

Abstract

In this work we synthesized undoped ZnS and ZnS:Ni nanoparticles by a simple chemical method, namely the chemical precipitation method. The structure and optical properties of the prepared samples were characterized using X-ray diffraction (XRD), Field Emission Scanning Electron Microscope (FESEM), UV-Vis-NIR Spectrophotometer and Fluorescence spectroscopy. XRD patterns showed that the ZnS and ZnS:Ni nanoparticles have zinc blende structure with the crystallite sizes of about 6-10 nm range. The value of optical band gap has been found to be in range 4.88- 3.93 eV. Room temperature photoluminescence (PL) spectrum of the undoped sample exhibits emission in the blue region with multiple peaks under UV excitation. Ni2+ doped ZnS samples visible light emissions under the same UV excitation wavelength of 310 nm.

Original languageEnglish
Pages (from-to)15-20
Number of pages6
JournalJournal of Ovonic Research
Volume8
Issue number1
StatePublished - 1 Jan 2012
Externally publishedYes

Keywords

  • Band gap
  • Nanoparticle
  • Optical absorption
  • Semiconductor
  • UV-Vis

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Physics and Astronomy (miscellaneous)
  • Surfaces, Coatings and Films

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