Carrier Dynamics in Quantum Dots Coupled to a 2DHG

The following chapter presents the results of the investigation of the coupling between a layer of self-assembled QDs and an adjacent two-dimensional hole gas (2DHG). In total, three samples are investigated, of which each has a different tunneling barrier between the QDs and the 2DHG, resulting in a different coupling strength. The samples are analyzed using capacitance-voltage (C-V) spectroscopy and time-resolved measurements of the source-drain current which flows through the 2DHG.