Portal de Periódicos da CAPES

Cascade evolution and radiative recombination of quantum dot multiexcitons studied by time-resolved spectroscopy

2000; American Physical Society; Volume: 62; Issue: 16 Linguagem: Inglês

10.1103/physrevb.62.11038

1095-3795

E. Dekel, D.V. Regelman, D. Gershoni, E. Ehrenfreund, Winston V. Schoenfeld, P. M. Petroff,

Quantum and electron transport phenomena

We resolve spatially, spectroscopically, and temporally the photoluminescence emission from single self-assembled InAs/GaAs quantum dots. The rich photoluminescence spectrum and its evolution with time after pulse excitation and with the density of excitation is experimentally measured and analyzed using a theoretical multiexciton model. The model accounts quantitatively for the dynamics of a small number of interacting electrons and holes confined in optically excited semiconductor quantum dots.