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Proceedings Paper

Correlation of structural and optical properties of self-organized quantum dots
Author(s): Andrei Schliwa; Sven Rodt; Florian Guffarth; Konstantin Poetschke; Till Warming; Robert Seguin; Dieter Bimberg
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Paper Abstract

Interaction between strongly localized charge carriers in zero-dimensional systems like quantum dots (QD) depends sensitively on the geometrical roperties of the dots. The recently observed monolayer splitting with eight well resolved peaks (in low excitation photoluminescence (PL)) together with eight-band kp theory as the appropriate tool for modeling electronic and optical properties offers direct spectroscopic access to details of the QD morphology. By this achievement it became possible to link single-dot spectra obtained by cathodoluminescence measurements via the exciton transition energy to structural properties of the probed QD. In view of theory this situation constitutes an ideal starting point to study few-particle interactions for realistic InAs QDs as a function of their structural properties. This is done using the configuration interaction method. The wavefunctions are obtained from eight-band kp calculations of single-particle states including explicitly piezoelectric effects in the confinement potential.

Paper Details

Date Published: 14 June 2004
PDF: 9 pages
Proc. SPIE 5361, Quantum Dots, Nanoparticles, and Nanoclusters, (14 June 2004); doi: 10.1117/12.531546
Show Author Affiliations
Andrei Schliwa, Technische Univ. Berlin (Germany)
Sven Rodt, Technische Univ. Berlin (Germany)
Florian Guffarth, Technische Univ. Berlin (Germany)
Konstantin Poetschke, Technische Univ. Berlin (Germany)
Till Warming, Technische Univ. Berlin (Germany)
Robert Seguin, Technische Univ. Berlin (Germany)
Dieter Bimberg, Technische Univ. Berlin (Germany)

Published in SPIE Proceedings Vol. 5361:
Quantum Dots, Nanoparticles, and Nanoclusters
Diana L. Huffaker; Pallab Bhattacharya, Editor(s)

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