Modeling of minibands and electronic transport in one-dimensional stacks of InAs/GaAs quantum dots
In: Physica E: Low-dimensional Systems and Nanostructures, Jg. 42 (2009) ; Nr. 4, S. 906-910
Zeitschriftenaufsatz / Fach: Physik
We investigate the effect of the electron miniband energy spectrum of periodic 1D stacks of disk-shaped InAs quantum dots in GaAs on their electronic transport characteristics. The widely used approximation of a constant relaxation time is not adequate for a stack of semiconductor quantum dots. Certain windows of concentration are revealed, where arrays of quantum dots possess a geometry-controlled enhanced efficiency as thermoelectric converters.