0000000000595572

AUTHOR

Jose Bosch

showing 3 related works from this author

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

2008

6 páginas, 3 figuras.-- Proceedings of the 7th International Conference on Physics of Light-Matter Coupling in Nanostructures.

PhysicsCondensed matter physicsExcitonQuantum-confined Stark effectSingle quantum dotElectronCondensed Matter::Mesoscopic Systems and Quantum Hall EffectCondensed Matter PhysicsQuantum dotElectric fieldElectro-absorption modulatorCharged excitonsGeneral Materials ScienceElectrical and Electronic EngineeringWave functionQuantum tunnellingSuperlattices and Microstructures
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Oscillator strength reduction induced by external electric fields in self-assembled quantum dots and rings

2007

We have carried out continuous wave and time resolved photoluminescence experiments in self-assembled In(Ga)As quantum dots and quantum rings embedded in field effect structure devices. In both kinds of nanostructures, we find a noticeable increase of the exciton radiative lifetime with the external voltage bias that must be attributed to the field-induced polarizability of the confined electron hole pair. The interplay between the exciton radiative recombination and the electronic carrier tunneling in the presence of a stationary electric field is therefore investigated and compared with a numerical calculation based on the effective mass approximation.

III-V semiconductorsOscillator strengthRadiative lifetimesTime resolved spectraTunnellingSelf assembledCondensed Matter::Materials ScienceGallium arsenideIndium compoundsElectric fieldQuantum mechanicsSemiconductor quantum dotsNetwork of excellenceEuropean commissionPhotoluminescenceQuantum tunnellingPhysicsSelf-assemblyCondensed Matter::Mesoscopic Systems and Quantum Hall EffectCondensed Matter PhysicsElectronic Optical and Magnetic MaterialsQuantum dotEffective massElectron hole recombinationElectron-hole recombinationPhysical Review B
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Exciton recombination in self-assembled InAs/GaAs small quantum dots under an external electric field

2002

5 páginas, 3 figuras.-- PACS: 73.63.Kv; 78.55.Cr; 78.67.Hc; S7.12.-- Trabajo presentado en la 7th International Conference on Optics and Excitons in Confined Systems (OECS7).

PhotoluminescenceCondensed matter physicsQuantum dotChemistryElectric fieldExcited stateExcitonAtomic physicsCondensed Matter PhysicsRecombinationBiexcitonElectronic Optical and Magnetic MaterialsSelf assembled
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