Dresden 2026 – scientific programme
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HL: Fachverband Halbleiterphysik
HL 20: Poster I
HL 20.36: Poster
Tuesday, March 10, 2026, 18:00–20:00, P1
Illumination Response of Electron Capture and Emission Dynamics in Self-Assembled Quantum Dots — •Till Draxler1, Jan Lange1, Julia Avdeev1, Sven Scholz2, Arne Ludwig2, Andreas Wieck2, and Thomas Heinzel1 — 1Condensed Matter Physics Laboratory, Heinrich-Heine University Düsseldorf — 2Lehrstuhl für Angewandte Festkörperphysik, Ruhr-Universität Bochum
InAs Self Assembled Quantum Dots (SAQDs) are nanoscale semiconductor structures that confine charge carriers in all three spatial dimensions, leading to discrete, atom-like energy levels. Using Deep Level Transient Spectroscopy (DLTS) the influence of infrared irradiation with photon energies in respect to the bandgap energies of GaAs and InAs on the electron transfer dynamics is studied. To maintain a proper illumination of the SAQDs, semi-transparent NiCr Schottky gates are manufactured instead of classical Au gate.
Keywords: Self Assembled Quantum Dots; DLTS; Illumination; Capacitance