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Optical Study of the Anisotropic Confinement of Excitons in GaAs/AlGaAs Quantum Dots
e-Journal of Surface Science and Nanotechnology
Anisotropic confinement of excitons in a single GaAs/Al0.405Ga0.595As quantum dot (QD) is studied using micro-photoluminescence (micro-PL) measurements. In this study, a low-density GaAs QD sample is prepared by Modified Droplet Epitaxy (MDE). The QDs are anisotropic in shape and relatively large. This low density sample is combined with micro-PL spectroscopy to obtain single QD spectra. From the single GaAs QD micro-PL spectrum-excitation density dependence, an initial blue shift ofdoi:10.1380/ejssnt.2006.446 fatcat:aqulvdx4pzfobn33qfsa7la3e4