Abstract
The strong three-dimensional quantum confinement in semiconductor quantum dots (QDs) results in a discrete, atomic-like carrier density of states. In turn, (i) the coupling to the solid-state environment (e.g., phonons) is strongly suppressed and (ii) Coulomb correlations among charge carriers are strongly enhanced, indeed, in the optical spectra of single dots spectrally narrow emission peaks have been observed (indicating a small environment coupling), which undergo discrete energy shifts when more carriers are added to the dot (indicating energy renormalizations due to additional Coulomb interactions).1
© 2001 Optical Society of America
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