Blue light emission from barium doped zinc sulfide nanoparticles

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

Research output: Contribution to journalArticlepeer-review

37 Scopus citations

Abstract

ZnS nanoparticles with Ba 2+doping have been prepared at room temperature through chemical route, namely the chemical precipitation method. The nanostructures of the prepared nanoparticles have been analyzed using 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 wave length. The sizes of as prepared nanoparticles are found to be in 9-10 nm range. FESEM morphology shows the formation of nanostructure of ZnS samples. The value of optical band gap has been found to be in range 4.10-4.63 eV. Room temperature photoluminescence (PL) spectrum of the undoped sample exhibits emission in the blue region with multiple peaks under UV excitation. On the other hand, the Ba 2+ doped ZnS samples exhibit visible light emissions under the same UV excitation wavelength of 310 nm.

Original languageEnglish
Pages (from-to)5497-5500
Number of pages4
JournalCeramics International
Volume38
Issue number7
DOIs
StatePublished - 1 Sep 2012
Externally publishedYes

Keywords

  • Band gap
  • Optical absorption
  • Photoluminescence
  • Semiconductors

ASJC Scopus subject areas

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

Fingerprint

Dive into the research topics of 'Blue light emission from barium doped zinc sulfide nanoparticles'. Together they form a unique fingerprint.

Cite this