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Dependence on temperature of circular polarization and relaxation time in InAlAs/AlGaAs quantum dots |
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| Authors: | A. Sahli A. Melliti N. Sellami M.A. Maaref C. Testelin A. Lemaitre P. Voisin |
| Affiliation: | aUnité de recherche de Physique des Semiconducteurs et Capteurs, Institut Préparatoire aux Etudes Scientifiques et Techniques, La Marsa 2070, Tunisia bInstitut des NanoSciences de Paris,Campus Boucicaut, Universités Paris 6 et 7, CNRS, UMR7588, 140 rue de Lourmel, 75015 Paris, France cLaboratoire de Photonique et Nanostructures, CNRS, UPR20, France |
| Abstract: | We have studied the variation of photoluminescence circular polarization as a function of temperature in self-organized InAlAs/AlGaAs quantum dots. We have found that the circular polarization depends on temperature. The relaxation time τs is deduced from the circular polarization degree. It decreases from 2 ns at 40 K to 100 ps at 85 K. |
| Keywords: | A. Nanostructure III–V semiconductors Quantum dots Photoluminescence |
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