LOUYER, Yann; BIADALA, Louis; TAMARAT, Philippe; LOUNIS, Brahim

doi:10.1063/1.3435464

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LOUYER, Yann
Centre de physique moléculaire optique et hertzienne [CPMOH]

BIADALA, Louis
Centre de physique moléculaire optique et hertzienne [CPMOH]

TAMARAT, Philippe
Centre de physique moléculaire optique et hertzienne [CPMOH]

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Ce document a été publié dans

Applied Physics Letters. 2010-05-21, vol. 96, p. 203111

American Institute of Physics

Résumé en anglais

We report a low temperature spectroscopic study of the lowest-energy exciton states in single CdSe/ZnS colloidal nanocrystals (NCs). In their neutral charge state, the zero-phonon lines of the lowest two levels of the band-edge exciton fine structure are directly observed in the photoluminescence (PL) spectrum. The attribution of these lines is confirmed by polarization-resolved studies of the PL spectrum and decay. We also identified the emission from charged NCs which displays a single zero-phonon line ~17 meV redshifted with respect to the neutral NC emission lines. This bright trion state has a lifetime which ranges from 1.5 to 4.5 ns.< Réduire

DOI

http://dx.doi.org/10.1063/1.3435464

Project ANR

PROtocoles quantiques utilisant des Sources à Photons unIQues - ANR-06-NANO-0041

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Importé de hal

Unités de recherche

Laboratoire Ondes et Matière d'Aquitaine (LOMA) - UMR 5798