0000000000003113

AUTHOR

W. Ouerghui

showing 3 related works from this author

Temperature dependent optical properties of stacked InGaAs/GaAs quantum rings

2008

4 páginas, 3 figuras, 2 tablas.-- MADICA 2006 Conference, Fifth Maghreb-Europe Meeting on Materials and their Applicatons for Devices and Physical, Chemical and Biological Sensors

Materials sciencePhotoluminescenceAtmospheric escapeTime resolved photoluminescenceExcitonBioengineeringThermionic emissionActivation energyCondensed Matter::Mesoscopic Systems and Quantum Hall EffectBiomaterialsCondensed Matter::Materials ScienceMechanics of MaterialsExcited stateQuantum ringsVertical stacksAtomic physicsQuantumRecombination
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Size filtering effect in vertical stacks of In(Ga)As/GaAs self-assembled quantum rings

2006

3 páginas, 3 figuras.

NanostructurePhotoluminescenceMaterials sciencebusiness.industryBioengineeringRing (chemistry)SignalSelf assembledBiomaterialsLaser linewidthMechanics of MaterialsQuantum ringsVertical stackOptoelectronicsbusinessQuantumPhotoluminescenceMolecular beam epitaxy
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Effect of carrier transfer on the PL intensity in self-assembled In (Ga) As/GaAs quantum rings

2006

We present results concerning the carrier transfer between In(Ga)As quantum rings in a stacked multilayer structure, which is characterised by a bimodal size distribution. This transfer of carriers explains the observed temperature behaviour of diode lasers based on that kind of stacked layer structures. The inter-ring carrier transfer can be possible by phonon assisted tunnelling from the ground state of the smallring family towards the big-ring family of the bimodal size distribution. This process is thermally activated in the range 40–80 K.

SuperlatticesPhononChemistrybusiness.industrySuperlatticeCondensed Matter PhysicsMolecular physicsElectronic Optical and Magnetic MaterialsTunnel effectOpticsMultilayersCr-III-V semiconductorsThin filmGround statebusinessInstrumentationQuantum tunnellingDiodeMolecular beam epitaxyThe European Physical Journal Applied Physics
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