Heterogeneity of the electron-trapping kinetics in CdSe nanoparticles.
basic_science · Level V
Where this comes from
- Record sourced from PubMed, PMID 21780773.
- Also identified by DOI 10.1021/nl202086b.
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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.
Medical subject headings
- Cadmium Compounds
- Electrons
- Nanoparticles
- Selenium Compounds