ABSTRACT
A prerequisite to understand the manifold of blinking processes is the assumption that colloidal Quantum Dots (QD) constitute, together with the embedding environment, a strongly disordered system. This chapter discusses the influence of excitation power and wavelength and focuses on the effects of substrate surfaces and capping ligands on blinking dynamics. Independent of the model, the presence or creation of charges plays a crucial role. It has been shown in many former publications that blinking depends on various factors such as the concrete composition of the QD, the ligand shell, the embedding matrix or supporting substrate, the excitation power, and the excitation energy. The chapter presents some new results of the influence of different ligands on blinking dynamics. It addresses the question of whether this influence can be modeled the same way as the influence of the dielectric properties of an embedding matrix.
