T. Grange, R. Ferreira, G. Bastard
Published 2007-11-30Version 1
We calculate the lifetime of conduction band excited states in self-assembled quantum dots by taking into account LO-phonon-electron interaction and various anharmonic phonon couplings. We show that polaron relaxation cannot be accurately described by a semi-classical model. The contributions of different anharmonic decay channels are shown to depend strongly on the polaron energy. We calculate the energy dependence of polaron lifetime and compare our results to available experimental measurements of polaron decay time in InAs/GaAs quantum dots.
Comments: 5 pages, 4 figure, accepted for publication in Phys. Rev. B (Rapid Com.)
Intersublevel Polaron Dephasing in Self-Assembled Quantum Dots
Atomistic theory of dark excitons in self-assembled quantum dots of reduced symmetry
Effects of charged defects on the electronic and optical properties of self-assembled quantum dots
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