Title :
Multiexcitons squeezed into the sub-excitonic volume of a colloidal quantum dot
Author :
Achermann, M. ; Hollingsworth, J.A. ; Klimov, V.I.
Author_Institution :
Div. of Chem., Los Alamos Nat. Lab., NM, USA
Abstract :
Spectroscopic and dynamical measurements of multiexciton states in CdSe colloidal quantum dots (QDs) reveal room-temperature stable biexcitons and triexcitons. Strong spatial confinement in "ultrasmall" colloidal QDs results in enhanced multiparticle effects and, specifically, in "giant" multiexciton interaction energies.
Keywords :
biexcitons; cadmium compounds; colloidal crystals; high-speed optical techniques; photoluminescence; semiconductor quantum dots; 20 degC; CdSe; biexcitons; colloidal quantum dot; enhanced multiparticle effects; femtosecond photoluminescence upconversion; multiexciton interaction energies; multiexcitons; room-temperature; spatial confinement; sub-excitonic volume; triexcitons; Chemistry; Dielectrics; Excitons; Laboratories; Photoluminescence; Quantum dots; Quantum well devices; Spectroscopy; US Department of Transportation; Ultrafast optics;
Conference_Titel :
Quantum Electronics and Laser Science, 2003. QELS. Postconference Digest
Conference_Location :
Baltimore, MD, USA
Print_ISBN :
1-55752-749-0
DOI :
10.1109/QELS.2003.237995
