title: Continuous-wave pumping of multiexciton bands in the photoluminescence spectrum of a single CdTe-CdSe core-shell colloidal quantum dot.
abstract: Single-exciton, biexciton, triexciton, and quadraexciton bands were resolved in the microphotoluminescence spectrum of a single CdTe/CdSe core-shell colloidal quantum dot, revealing nearly blinking-free behavior. Multiexcitons were generated by a sequential filling of electronic shells with the increase of a continuous-wave excitation power, and their probability was evaluated under steady-state conditions. A partial carriers' delocalization was determined at the core-shell interface, and an exciton binding energy was estimated by a second-order perturbation theory.
authors.affiliation: Schulich Faculty of Chemistry, Russell Berrie Nanotechnology Institute, Technion, Haifa 32000, Israel.
authors.forename: Ruth
authors.initials: R
authors.lastname: Osovsky
authors.forename: Dima
authors.initials: D
authors.lastname: Cheskis
authors.forename: Viki
authors.initials: V
authors.lastname: Kloper
authors.forename: Aldona
authors.initials: A
authors.lastname: Sashchiuk
authors.forename: Martin
authors.initials: M
authors.lastname: Kroner
authors.forename: Efrat
authors.initials: E
authors.lastname: Lifshitz