102 citations · 370 across the 9 of their papers we have counts for
9 papers
Efficient Exciton Transport in Strongly Quantum-Confined Silicon Quantum Dots
Zhibin Lin, Huashan Li, Alberto Franceschetti +1
First-order perturbation theory and many-body Green function analysis are used to quantify the influence of size, surface reconstruction and surface treatment on exciton transport…
Size Dependence of the Multiple Exciton Generation Rate in CdSe Quantum Dots
Zhibin Lin, Alberto Franceschetti, Mark T. Lusk
The multiplication rates of hot carriers in CdSe quantum dots are quantified using an atomistic pseudopotential approach and first order perturbation theory. Both excited holes and…
Excitonic exchange effects on the radiative decay time of monoexcitons and biexcitons in quantum dots
Gustavo A. Narvaez, Gabriel Bester, Alberto Franceschetti +1
Electron-hole exchange interactions split the exciton ground state into "dark" and "bright" states. The dynamics of those states depends on the internal relaxation time between bri…
Screening of point charges in Si quantum dots
Alberto Franceschetti, M. Claudia Troparevsky
The screening of point charges in hydrogenated Si quantum dots ranging in diameter from 10 A to 26 A has been studied using first-principles density-functional methods. We find tha…
Excited-state relaxations and Franck-Condon shift in Si quantum dots
A. Franceschetti, S. T. Pantelides
Excited-state relaxations in molecules are responsible for a red shift of the absorption peak with respect to the emission peak (Franck-Condon shift). The magnitude of this shift i…
Correlation versus mean-field contributions to excitons, multi-excitons, and charging energies in semiconductor quantum dots
J. Shumway, A. Franceschetti, Alex Zunger
Single-dot spectroscopy is now able to resolve the energies of excitons, multi-excitons, and charging of semiconductor quantum dots with ~<1 meV resolution. We discuss the physical…