Regensburg 2022 – wissenschaftliches Programm
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HL: Fachverband Halbleiterphysik
HL 3: Quantum Dots and Wires 1: Transport and Electronic Properties
HL 3.7: Vortrag
Montag, 5. September 2022, 11:45–12:00, H32
Electrostatic coupling of double layer self-assembled quantum dots — •Lukas Berg1, Laurin Schnorr1, Thomas Heinzel1, Arne Ludwig2, and Andreas Dirk Wieck2 — 1Heinrich-Heine Universität, Düsseldorf, Germany — 2Ruhr-Universität, Bochum, Germany
The electron capture- and emission dynamics of two layers of self-assembled quantum dots in large distance to each other as well as to their reservoirs is studied by time resolved capacitance spectroscopy. The occupation dynamics of the individual layers can be well separated at certain bias voltages. Additionally, an interaction of the electrostatic character is observed in terms of a shift of emission lifetimes and the extracted binding energies. To model this effect, the corresponding system of rate equations is solved.