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Temperature Dependence of Single CdSe/ZnS Quantum Dots Luminescence Lifetime

hal.structure.identifierCentre de physique moléculaire optique et hertzienne [CPMOH]
dc.contributor.authorLABEAU, Olivier
hal.structure.identifierCentre de physique moléculaire optique et hertzienne [CPMOH]
dc.contributor.authorTAMARAT, Philippe
hal.structure.identifierCentre de physique moléculaire optique et hertzienne [CPMOH]
dc.contributor.authorLOUNIS, Brahim
dc.date.created2003-06-26
dc.date.issued2003-06-26
dc.identifier.issn0031-9007
dc.description.abstractEnWe study the temperature dependence of the luminescence decay of single CdSe/ZnS quantum dots between 2 and 140 K. For the first time, we observe a biexponential decay which was completely hidden in ensemble measurements. We find that the long time component strongly depends on temperature. This demonstrates that the band edge luminescence arises from two thermally mixed fine structure states, the dark ground state and the lowest bright one. To interpret our results, we derive the analytical expressions for the decay using a three level model. Fitting the experimental data leads directly to the lifetime of the states as well as their energy splitting.
dc.language.isoen
dc.publisherAmerican Physical Society
dc.subjectsingle molecule detection
dc.subjectCdSe quantum dots
dc.subjectluminescence decay
dc.titleTemperature Dependence of Single CdSe/ZnS Quantum Dots Luminescence Lifetime
dc.typeArticle de revue
dc.identifier.doi10.1103/PhysRevLett.90.257404
dc.subject.halPhysique [physics]/Physique [physics]/Optique [physics.optics]
dc.subject.halPhysique [physics]/Matière Condensée [cond-mat]/Autre [cond-mat.other]
bordeaux.journalPhysical Review Letters
bordeaux.page257404
bordeaux.volume90
bordeaux.peerReviewedoui
hal.identifierhal-00144123
hal.version1
hal.popularnon
hal.audienceNon spécifiée
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-00144123v1
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