Multiexciton Absorption Cross Sections of CdSe Nanocrystals at Band-Edge Energy

Multiexciton Absorption Cross Sections of CdSe Nanocrystals at Band-Edge Energy

Picosecond transient absorption signals of two kinds of cadmium selenide quantum dots were measured at various excitation intensities. The average number of excitons per quantum dot was calculated from a Poisson model, which together with kinetic parameters was used to determine exciton population k...

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Bibliographic Details
Published in:18th International Conference on Ultrafast Phenomena,Lausanne, Switzerland,2012-07-08 - 2012-07-13 Vol. 41; pp. 4034 - np
Main Authors: Lenngren, N., Garting, T., Zheng, K., Abdellah, M., Lascoux, N., Ma, F., Yartsev, A., Žídek, K., Pullerits, T.
Format: Journal Article Conference Proceeding
Language:English
Published: EDP Sciences 01-01-2013
Subjects:
Absorption cross sections
Atom and Molecular Physics and Optics
Atom- och molekylfysik och optik
Cadmium selenides
Capture cross sections
Excitation
Excitons
Fysik
Mathematical models
Nanocrystals
Natural Sciences
Naturvetenskap
Physical Sciences
Quantum dots
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Summary:Picosecond transient absorption signals of two kinds of cadmium selenide quantum dots were measured at various excitation intensities. The average number of excitons per quantum dot was calculated from a Poisson model, which together with kinetic parameters was used to determine exciton population kinetics. Exciton and multiexciton absorption cross sections were determined and analyzed in terms of the electronic states of the quantum dots.
Bibliography:ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
ISBN:9782759809561
2759809560
ISSN:2100-014X
2101-6275
2100-014X
DOI:10.1051/epjconf/20134104034