Thermodynamic origin of the slow free exciton photoluminescence rise in GaAs

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dc.identifier.uri http://dx.doi.org/10.15488/3063
dc.identifier.uri http://www.repo.uni-hannover.de/handle/123456789/3093
dc.contributor.author Beck, Michael ger
dc.contributor.author Hübner, Jens ger
dc.contributor.author Oestreich, Michael ger
dc.contributor.author Bieker, S. ger
dc.contributor.author Henn, T. ger
dc.contributor.author Kiessling, T. ger
dc.contributor.author Ossau, W. ger
dc.contributor.author Molenkamp, L.W. ger
dc.date.accessioned 2018-03-12T08:32:44Z
dc.date.available 2018-03-12T08:32:44Z
dc.date.issued 2016
dc.identifier.citation Beck, M. et al.: Thermodynamic origin of the slow free exciton photoluminescence rise in GaAs. In: Physical Reviews B 93 (2016), 081204. DOI: https://doi.org/10.1103/PhysRevB.93.081204 ger
dc.description.abstract We use time-resolved photoluminescence (TRPL) spectroscopy to unequivocally clarify the microscopic origin of the nanosecond free exciton photoluminescence rise in GaAs at low temperatures. In crucial distinction from previous work, we examine the TRPL of the GaAs free exciton second LO-phonon replica. This enables us to simultaneously monitor the unambiguous time evolution of the total exciton population and the cooling dynamics of the initially hot free exciton ensemble. We demonstrate by a model based on the Saha equation and the experimentally determined cooling behavior that the long-debated slow photoluminescence rise is caused by time-dependent shifts in the thermodynamic quasiequilibrium between free excitons and the uncorrelated electron-hole plasma. ger
dc.language.iso ger ger
dc.publisher College Park, MD : American Physical Society
dc.relation.ispartofseries Physical Reviews B 93 (2016) ger
dc.rights Es gilt deutsches Urheberrecht. Das Dokument darf zum eigenen Gebrauch kostenfrei genutzt, aber nicht im Internet bereitgestellt oder an Außenstehende weitergegeben werden. ger
dc.subject Excitons eng
dc.subject Phonons eng
dc.subject III-V semiconducotrs eng
dc.subject Photoluminescence eng
dc.subject Photolumineszenz ger
dc.subject.ddc 530 | Physik ger
dc.title Thermodynamic origin of the slow free exciton photoluminescence rise in GaAs ger
dc.type article ger
dc.type Text ger
dc.relation.doi 10.1103/PhysRevB.93.081204
dc.description.version publishedVersion ger
tib.accessRights frei zug�nglich


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