TY - JOUR
T1 - Continuous-wave pumping of multiexciton bands in the photoluminescence spectrum of a single CdTe-CdSe core-shell colloidal quantum dot
AU - Osovsky, Ruth
AU - Cheskis, Dima
AU - Kloper, Viki
AU - Sashchiuk, Aldona
AU - Kroner, Martin
AU - Lifshitz, Efrat
PY - 2009/5/11
Y1 - 2009/5/11
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=65649121605&partnerID=8YFLogxK
U2 - 10.1103/PhysRevLett.102.197401
DO - 10.1103/PhysRevLett.102.197401
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AN - SCOPUS:65649121605
SN - 0031-9007
VL - 102
JO - Physical Review Letters
JF - Physical Review Letters
IS - 19
M1 - 197401
ER -