InAs/GaAs Quantum Dots with multimodal Size Distribution. -Capacitance Voltage Spectroscopy of InAs Quantum Dots. -Dynamics of carrier transfer into In(Ga)As self-assembled quantum dots. -Spin phenomena in self-assembled quantum dots. -Studies of Semiconductor Quantum Dots for Quantum Information Processing. -In(Ga)As/GaAs quantum dots grown by MOCVD for opto-electronic device applications. -Excitons and spins in quantum dots coupled to a continuum...