title: Spin-polarizable excitonic luminescence in colloidal Mn2+-doped CdSe quantum dots.
abstract: The photoluminescence of colloidal Mn2+-doped CdSe nanocrystals has been studied as a function of nanocrystal diameter. These nanocrystals are shown to be unique among colloidal doped semiconductor nanocrystals reported to date in that quantum confinement allows tuning of the CdSe bandgap energy across the Mn2+ excited-state energies. At small diameters, the nanocrystal photoluminescence is dominated by Mn 2+ emission. At large diameters, CdSe excitonic photoluminescence dominates. The latter scenario has allowed spin-polarized excitonic photoluminescence to be observed in colloidal doped semiconductor nanocrystals for the first time.
authors.affiliation: Department of Chemistry, University of Washington, Seattle, WA 98195, USA.
authors.forename: Rémi
authors.initials: R
authors.lastname: Beaulac
authors.forename: Paul I
authors.initials: PI
authors.lastname: Archer
authors.forename: Xinyu
authors.initials: X
authors.lastname: Liu
authors.forename: Sanghoon
authors.initials: S
authors.lastname: Lee
authors.forename: G Mackay
authors.initials: GM
authors.lastname: Salley
authors.forename: Margaret
authors.initials: M
authors.lastname: Dobrowolska
authors.forename: Jacek K
authors.initials: JK
authors.lastname: Furdyna
authors.forename: Daniel R
authors.initials: DR
authors.lastname: Gamelin