Carrier thermodynamics inquantum dots
- 1 November 2006
- journal article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 74 (20)
- https://doi.org/10.1103/physrevb.74.205302
Abstract
We present a detailed study of the carrier thermodynamics in InAs / InxGa1−xAs self-assembled quantum dots performed via an accurate determination of the dependence of the quantum dot photoluminescence efficiency on temperature, excitation power density and wavelength. We have found experimental evidences that the electron and hole populations in the dots are highly correlated. We also show that other puzzling effects, like the onset of the superlinear dependence of the quantum dot integrated photoluminescence intensity on the excitation power density, stem from the saturation, by the photogenerated carriers, of nonradiative centers in barrierKeywords
This publication has 21 references indexed in Scilit:
- 1.28μm lasing from stacked InAs∕GaAs quantum dots with low-temperature-grown AlGaAs cladding layer by metalorganic chemical vapor depositionApplied Physics Letters, 2005
- Efficient room temperature carrier trapping in quantum dots by tailoring the wetting layerJournal of Applied Physics, 2003
- Temperature and excitation density dependence of the photoluminescence from annealed InAs/GaAs quantum dotsPhysical Review B, 2003
- Single-mode solid-state single photon source based on isolated quantum dots in pillar microcavitiesApplied Physics Letters, 2001
- Close-to-ideal device characteristics of high-power InGaAs/GaAs quantum dot lasersApplied Physics Letters, 2001
- Coupling and Entangling of Quantum States in Quantum Dot MoleculesScience, 2001
- Carrier thermal escape and retrapping in self-assembled quantum dotsPhysical Review B, 1999
- High photoluminescence efficiency of InGaAs/GaAs quantum dots self-formed by atomic layer epitaxy techniqueApplied Physics Letters, 1997
- Temperature and excitation dependence of photoluminescence line shapein InAs/GaAs quantum-dot structuresPhysical Review B, 1997
- Thermally activated carrier transfer and luminescence line shape in self-organized InAs quantum dotsApplied Physics Letters, 1996