Many-body effects in carrier capture and energy relaxation in self-organized InAs/GaAs quantum dots
- We have measured carrier dynamics in self-organized InAs/GaAs quantum dots using femtosecond time-resolved photoluminescence. The observation of intensity building up sequentially from the lower states is attributed to fast trapping and intra-dot relaxation; the dependence of population risetimes on carrier density indicates that relaxation is governed by carrier-carrier scattering. Strong many-body effects are also observed at high excitation densities. (C) 1999 Elsevier Science B.V. All rights reserved.
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