1.
Phys Rev Lett
; 94(8): 087403, 2005 Mar 04.
Article
in English
| MEDLINE
| ID: mdl-15783930
ABSTRACT
We report room-temperature ordered multiphoton emission from multiexciton states of single CdSe(CdZnS) core(-shell) colloidal nanocrystals (NCs) that are synthesized by wet chemical methods. Spectrally and temporally resolved measurements of biexciton and triexciton emission from single NCs are also presented. A simple four level system models the results accurately and provides estimates for biexciton and triexciton radiative lifetimes and quantum yields.