title: Heterogeneity of the electron-trapping kinetics in CdSe nanoparticles.
abstract: The kinetics of electron trapping in CdSe nanoparticles are examined from 0.5 ps to 1.8 ns. The ensemble kinetics fit a slow power law, but two-dimensional measurements show that the decay of each nanoparticle is exponential. A model is proposed in which defect sites provide a gateway for surface trapping and are randomly distributed on the surface. The electric field from the particle's dipole moment creates the observed heterogeneity in rates.
authors.affiliation: Department of Chemistry and Biochemistry, University of South Carolina, Columbia, South Carolina 29208, United States.
authors.forename: Sean J
authors.initials: SJ
authors.lastname: Kern
authors.forename: Kalyanasis
authors.initials: K
authors.lastname: Sahu
authors.forename: Mark A
authors.initials: MA
authors.lastname: Berg
mesh_terms: D019187:Cadmium Compounds; D004583:Electrons; D007700:Kinetics; D053758:Nanoparticles; D018036:Selenium Compounds
chemical_list: D019187:Cadmium Compounds; D018036:Selenium Compounds; C058667:cadmium selenide