ABSTRACT
Phonon-induced relaxation of a charge to its ground state and other dynamics of excited charge carriers affect many important characteristics of nanoscale devices such as switching speed, luminescence efficiency, and carrier mobility and concentration. An alternative theory based on direct diagonalization and pseudopotentials has been proposed as a better theoretical approach to calculate the electronic states in quantum dots (QDs). Existing theoretical approaches primarily focus on static characterization of QD structure and spectra with a few efforts devoted to direct real-time modeling of experimental data. Thermal fluctuations of electronic levels depend directly on the specific phonon modes coupled to these levels. The electronic system is prepared in a pure state in which the electron-phonon correlation is maximal. The dense distribution of electronic levels near the energy gap is observed due to surface reconstructions and the lack of absolute spherical symmetry in the QD surface.
