Probing Electron Collisions in Nanostructures

Abstract: This thesis studies the role of interaction between charged particles for transport and optical properties in nanostructures. Simulations are provided for a quantitative description of the system dynamics probed by either current spectroscopy or light absorption. In the first part of the thesis (Part I) the basic theories are described and in the second part of the thesis (Part II) the papers listed below are presented. Paper I studies the effect of different types of electron-electron interaction terms in triple quantum dot transport. Paper II describes a method of calculating the yield for a quantum dot model due to Multiple Exciton Generation (MEG) which is an effect of electron-electron interaction. Paper III suggests optimization schemes for an efficient yield due to Multiple exciton generation in nanocrystal quantum dots. Paper IV describes two dimensional spectroscopy based on phase modulation technique to study the dynamics of ultrafast processes in nanostructures in real time.