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TU Dresden » Faculty of Mechanical Science and Engineering » Institute for Materials Science » Chair of Materials Science and Nanotechnology



Friday, 18 November 2005
(at 13:15 in room Phy 5.0.21)
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Low-dimensional semiconductor nanostructures grown on patterned substrates

Eli Kapon

Laboratory of Physics of Nanostructures
Ecole Polytechnique Füdürale de Lausanne
   






Recent progress in the studies of ordered semiconductor quantum wires (QWRs) and quantum dots (QDs) grown by organometallic chemical vapor deposition on patterned, nonplanar substrates is reviewed. With this approach, it is possible to achieve, e.g., (In)GaAs/AlGaAs QDs with perfect site control, record uniformity (low temperature inhomogeneous luminescence linewidths as low as 4 meV), and reproducible excitonic structure. Single- and correlated-photon emission is observed from these dots and yields insight into the exciton formation and recombination dynamics in these structures. Moreover, preferential carrier capture into such QDs via connected QWRs is observed in pyramidal QD light emitting diodes. Recent observation of Luttinger liquid behavior in the quantized resistance of V-groove QWRs will also be presented. Applications of these structures in lasers and other photonic devices will be discussed.

Invited by W. Wegsheider

Within the Graduiertenkolleg Nichtlinearität und Nichtgleichgewicht in kondensierter Materie, GRK 638

last modified: 2018.10.24 Mi
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