title: Time-domain ab initio study of Auger and phonon-assisted auger processes in a semiconductor quantum dot.
abstract: We developed time-domain ab initio simulation of Auger phenomena, including multiple exciton generation (MEG) and recombination (MER). It is the first approach describing phonon-assisted processes and early dynamics. MEG starts below the electronic threshold, strongly accelerating with energy. Ligands are particularly important to phonon-assisted MEG, which therefore can be probed with infrared spectroscopy. Short-time gaussian component gives 5-10% of MEG, justifying rate theories that assume exponential dynamics. MER is preceded by electron-phonon relaxation to low energies.
authors: Department of Chemistry, Kyoto University, Kyoto, 606-8502, Japan. kim@kuchem.kyoto-u.ac.jp
authors: Kim
authors: K
authors: Hyeon-Deuk
authors: Oleg V
authors: OV
authors: Prezhdo
mesh_terms: D003198:Computer Simulation; D017076:Computer-Aided Design; D004867:Equipment Design; D019544:Equipment Failure Analysis; D008027:Light; D008962:Models, Theoretical; D045663:Quantum Dots; D012542:Scattering, Radiation; D012666:Semiconductors