Excitons, Biexcitons, and Trions in CdSe Nanorods
Impacte
Scholar |
Altres documents de l'autoria: Rajadell Viciano, Fernando; Climente, Juan I.; Planelles, Josep; Bertoni, Andrea
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Mostra el registre complet de l'elementcomunitat-uji-handle:10234/9
comunitat-uji-handle2:10234/7013
comunitat-uji-handle3:10234/8638
comunitat-uji-handle4:
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http://dx.doi.org/10.1021/jp902652z |
Metadades
Títol
Excitons, Biexcitons, and Trions in CdSe NanorodsData de publicació
2009Editor
American Chemical SocietyISSN
11268-11272Tipus de document
info:eu-repo/semantics/articleVersió de l'editorial
http://pubs.acs.org/doi/abs/10.1021/jp902652zVersió
info:eu-repo/semantics/publishedVersionParaules clau / Matèries
Resum
We calculate the recombination energies and probabilities of neutral excitons (X), singly charged excitons (X±), and biexcitons (XX) in CdSe quantum dots of variable length. For spherical dots the relative position ... [+]
We calculate the recombination energies and probabilities of neutral excitons (X), singly charged excitons (X±), and biexcitons (XX) in CdSe quantum dots of variable length. For spherical dots the relative position of the emission lines is determined by the confinement. As the dot is elongated, however, Coulomb correlation overcomes single-particle effects and the emission line of X becomes more energetic than that of any other excitonic complex. Likewise, the recombination probability (τ−1) of spherical dots is characteristic of the strong confinement regime: τ−1(XX) 2τ−1(X±) 4τ−1(X). However, these ratios are reduced with increasing length, as correlations enhance the emission of each excitonic complex at a different rate. Our results are compared with available experimental data. [-]
Publicat a
Journal of Physical Chemistry C, 113, 26, p. 11268–11272Drets d'accés
Copyright © 2009 American Chemical Society
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