Correlation of structural and optical properties of self-organized quantum dots

Andrei Schliwa; Sven Rodt; Florian Guffarth; Konstantin Poetschke; Till Warming; Robert Seguin; Dieter Bimberg

doi:10.1117/12.531546

14 June 2004 Correlation of structural and optical properties of self-organized quantum dots

Andrei Schliwa, Sven Rodt, Florian Guffarth, Konstantin Poetschke, Till Warming, Robert Seguin, Dieter Bimberg

Proceedings Volume 5361, Quantum Dots, Nanoparticles, and Nanoclusters; (2004) https://doi.org/10.1117/12.531546
Event: Integrated Optoelectronic Devices 2004, 2004, San Jose, CA, United States

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.

Citation Download Citation

Andrei Schliwa, Sven Rodt, Florian Guffarth, Konstantin Poetschke, Till Warming, Robert Seguin, and Dieter Bimberg "Correlation of structural and optical properties of self-organized quantum dots", Proc. SPIE 5361, Quantum Dots, Nanoparticles, and Nanoclusters, (14 June 2004); https://doi.org/10.1117/12.531546

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