Enhanced photoluminescence properties of Mn2+ doped ZnS nanoparticles

C. S. Pathak, M. K. Mandal

Research output: Contribution to journalArticlepeer-review

28 Scopus citations

Abstract

The room-temperature photoluminescence (PL) of manganese doped zinc sulphide (ZnS:Mn2+) nanoparticles have been investigated. These Mn2+ doped ZnS nanoparticles have been synthesized by chemical precipitation method at room temperature. It has been found that passivation with acrylic acid (AA) yielded higher photoluminescence intensity. So-prepared Mn2+ doped ZnS nanoparticles then characterized by using X-ray diffraction (XRD), Scanning electron microscope (SEM), UV-Vis spectrophotometer. The size of the particle is found to be in 4.59-5.64 nm range. The value of band gap energy has been found to be in range 3.89-4.51 eV. Room temperature photoluminescence (PL) spectrum of the undoped sample exhibit a blue emission peaked at 465 nm under UV excitation whereas the Mn2+ doped sample exhibits a yellow emission peaked at 574 nm under same UV excitation.

Original languageEnglish
Pages (from-to)147-153
Number of pages7
JournalChalcogenide Letters
Volume8
Issue number3
StatePublished - 1 Jan 2011
Externally publishedYes

Keywords

  • Band gap
  • Nanoparticle
  • Optical absorption
  • UV-Vis
  • XRD
  • ZnS

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • General Chemistry
  • General Physics and Astronomy

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