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HL: Fachverband Halbleiterphysik
HL 29: Poster II
HL 29.63: Poster
Dienstag, 18. März 2025, 18:00–20:00, P1
Influence of Short-Wavelength Irradiation on Self-Assembled Quantum Dots — •Julia Avdeev1, Jan Lange1, Lukas Berg1, Laurin Schnorr1, Thomas Heinzel1, Charlotte Rothfuchs-Engels2, Sven Scholz2, Arne Ludwig2, and Andreas Wieck2 — 1Condensed Matter Physics Laboratory, Heinrich Heine University, Düsseldorf, Germany — 2Lehrstuhl für Angewandte Festkörperphysik, Ruhr-Universität, Bochum, Germany
Using Deep Level Transient Spectroscopy (DLTS) the charge transfer to and from Self-Assembled Quantum Dots (SAQDs) at large distance from the reservoir can be observed. Measurements are performed at a temperature of 77 K studying the influence of short-wavelength infrared irradiation. With wavelengths larger than 1.5 µm photons are not capable to induce charge emission from neutral Quantum Dots in ground state but can cause free charge carriers from electronic states in SAQDs.
Keywords: Quantum Dots; DLTS; Dynamics; Capacitance