Electronic states and optical properties of V-shaped AlGaAs/GaAs quantum wire superlattices

The influence of local disorders in growth direction generated in the initial growth stage of V-shaped AlGaAs/GaAs quantum wire superlattices (QWR-SL’s) on their electronic states and optical properties is investigated by means of photoluminescence, microphotoluminescence, and time-resolved photoluminescence measurements. It is found that localized states induced in the first several superlattice periods by local disorders dominate the luminescence processes of the superlattice structures. These results provide useful information toward the observation of intrinsic optical effects related to a real one-dimensional QWR-SL.