Photoluminescence decay dynamics and mechanism of energy transfer in undoped and Mn 2+ doped ZnSe nanoparticles

Edward M. Olano, Christian D. Grant, Thaddeus J. Norman, Edward W. Castner, Jin Z. Zhang

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

Energy transfer dynamics in Mn 2+-doped ZnSe nanoparticles have been studied by monitoring the photoluminescence using time-integrated and time-resolved spectroscopic techniques. Upon Mn 2+ doping, static photoluminescence (PL) spectra show that the bandedge excitonic state is quenched and the characteristic Mn 2+ emission appears at 584 nm. Picosecond PL kinetics and femtosecond transient absorption studies have both found that the Mn 2+ doping substantially shortens the average lifetimes of the bandedge excitonic state as well as shallow trap states. The energy transfer from ZnSe to Mn 2+ likely follows two mechanisms, one mediated through trap states and another without.

Original languageEnglish
Pages (from-to)1492-1497
Number of pages6
JournalJournal of Nanoscience and Nanotechnology
Volume5
Issue number9
DOIs
Publication statusPublished - Dec 1 2005

Keywords

  • Energy transfer dynamics
  • Mn -doped ZnSe nanoparticles
  • Photoluminescence decay dynamics

ASJC Scopus subject areas

  • Bioengineering
  • Chemistry(all)
  • Biomedical Engineering
  • Materials Science(all)
  • Condensed Matter Physics

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