An investigation of the structural and physical properties of colloidal quantum dots of narrow-band semiconductors via electron and scanning probe microscopy

Based on variations in the parameters of the synthesis of quantum dots and measurements on electron and probe microscopes, the study establishes that the crystallization rate during their colloidal synthesis is the determining factor for the structural and physical properties of quantum dots. At the same time, with the slow growth of crystals, the histogram of the size distribution has two maxima, which is probably due to the thermodynamic anisotropy of crystallization. The study of the tunnel-emission properties of quantum dots makes it possible to estimate the values of the effective mass of their conduction electrons and to assume the applicability of its method to quantum dots. At the same time, the values of the potential emission barrier are determined by the characteristic of the differential tunneling conductivity $(dI/dV)/(I/V)$.