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.
- Energy transfer dynamics
- Mn -doped ZnSe nanoparticles
- Photoluminescence decay dynamics
ASJC Scopus subject areas
- Materials Science(all)
- Materials Science (miscellaneous)
- Engineering (miscellaneous)