Influence of the charge carrier tunneling processes on the recombination dynamics in single lateral quantum dot molecules
arXiv:0911.1221 · doi:10.1103/PhysRevB.82.085309
Abstract
We report on the charge carrier dynamics in single lateral quantum dot molecules and the effect of an applied electric field on the molecular states. Controllable electron tunneling manifests itself in a deviation from the typical excitonic decay behavior which is strongly influenced by the tuning electric field and inter-molecular Coulomb energies. A rate equation model is developed to gain more insight into the charge transfer and tunneling mechanisms. Non-resonant (phonon-mediated) electron tunneling which changes the molecular exciton character from direct to indirect, and vice versa, is found to be the dominant tunable decay mechanism of excitons besides radiative recombination.
arXiv comment4 pages, 4 figures
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Cited by in corpus (7)
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- Opto-Mechanical Tuning of the Polarization Properties of Micropillar Cavity Systems with embedded Quantum Dots
- Phonon effects on the radiative recombination of excitons in double quantum dots
- Emission spectrum of quasi-resonant laterally coupled quantum dots
- Design of a 4-electrode optical device for application of vector electric fields to self-assembled quantum dot complexes
- Inter-dot coupling and excitation transfer mechanisms of telecommunication band InAs quantum dots at elevated temperatures