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Small. 2006 Nov;2(11):1308-13.

The empirical correlation between size and two-photon absorption cross section of CdSe and CdTe quantum dots.

Author information

1
Department of Chemistry, National Taiwan University, Taipei 106, Taiwan.

Abstract

The tuning of CdSe quantum dot (QDs) sizes, and consequently their corresponding two-photon absorption (TPA) cross section, has been systematically investigated. As the size (diameter) of the quantum dots increases, the TPA cross section is found to be empirically related via a power-law proportionality of 3.5+/-0.5 and 5.6+/-0.7 to the diameters of CdSe and CdTe QDs, respectively. The results are tentatively rationalized via a theoretical model of two-photon excitation properties in a system incorporating excitons and defects.

PMID:
17192978
DOI:
10.1002/smll.200600157
[Indexed for MEDLINE]

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