HOLE INTRABAND RELAXATION AND THE EXCITON RADIATIVE LIFETIME IN CDSE QUANTUM DOTS.

Conference · Sun Dec 31 23:00:00 EST 2000

DOI:https://doi.org/10.1109/QELS.2001.961891· OSTI ID:975315

Xu, Su; Mikhailovsky, A A ^[1]; Hollingsworth, J A ^[2]; Klimov, V I ^[3]

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1. Alexander A.
2. Jennifer A.
3. Victor I.

We study carrier dynamics in CdSe colloidal quantum dots (QDs) using femtosecond photoluminescence and transient absorption spectroscopies. We resolve hole relaxation between the high- and low-energy fine-structure states that are responsible for the band-edge absorption and emission, respectively. We derive a radiative lifetime of the lowest QD exciton from comparative studies of gated emission intensities in QD and laser-dye samples.

• Research Organization: Los Alamos National Laboratory
• Sponsoring Organization: DOE
• OSTI ID: 975315
• Report Number(s): LA-UR-01-2405
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ABSORPTION
EXCITONS
FINE STRUCTURE
LIFETIME
PHOTOLUMINESCENCE
QUANTUM DOTS
RELAXATION
TRANSIENTS