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Título

Competition between carrier recombination and tunneling in quantum dots and rings under the action of electric fields

AutorBosch, José; Alén, Benito ; Martínez-Pastor, Juan; Granados, Daniel ; García Martínez, Jorge Manuel ; González Sotos, Luisa
Palabras claveCharged excitons
Single quantum dot
Fecha de publicación2008
EditorElsevier
CitaciónSuperlattices and Microstructures 43(5-6): 582-587 (2008)
ResumenIn the presence of a stationary electric field applied in the growth direction tunneling of electrons out of the quantum dots can take place. This mechanism competes with the quantum confined Stark effect (QCSE) that produces an increase of the exciton lifetime by increasing the electric field, mainly due to a net decrease of the electron–hole wavefunction overlap. The electric field range where QCSE dominates over tunneling will be mainly determined by the size of the nanostructure along the vertical direction (height), as demonstrated in this work.
Descripción6 páginas, 3 figuras.-- Proceedings of the 7th International Conference on Physics of Light-Matter Coupling in Nanostructures.
Versión del editorhttp://dx.doi.org/10.1016/j.spmi.2007.07.022
URIhttp://hdl.handle.net/10261/31963
DOI10.1016/j.spmi.2007.07.022
ISSN0749-6036
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