Excitons in semiconductor nanostructures with disorder

Abstract
Excitons in quantum structures with alloy as well as interface disorder are treated. The optical properties follow from a solution of the Schrodinger equa- tion describing the exciton center-of-mass motion. The absorption linewidth is always smaller than the underlying potential variation (motional narrowing). Us- ing a kinetic approach with acoustic phonon scattering, luminescence lineshapes are calculated showing non-equilibrium exciton distributions. Spatially resolved spectroscopy allows to extract information on individual exciton eigenstates.

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