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Cryogenic Single Nanocrystal Spectroscopy: Reading the Spectral Fingerprint of Individual CdSe Quantum Dots

hal.structure.identifierlp2n-01,lp2n-12
dc.contributor.authorFERNÉE, Mark J.
hal.structure.identifierlp2n-01,lp2n-12
dc.contributor.authorSINITO, Chiara
hal.structure.identifierLaboratoire Ondes et Matière d'Aquitaine [LOMA]
dc.contributor.authorLOUYER, Yann
hal.structure.identifierlp2n-01,lp2n-12
dc.contributor.authorTAMARAT, Philippe
hal.structure.identifierlp2n-01,lp2n-12
dc.contributor.authorLOUNIS, Brahim
dc.date.created2014-04-14
dc.date.conference2014-04-14
dc.description.abstractEnSpectroscopically resolved emission from single nanocrystals at cryogenic temperatures provides unique insight into photophysical processes that occur within these materials. At low temperatures the emission spectra collapse to narrow lines revealing a rich spectroscopic landscape and unexpected properties, completely hidden at the ensemble level. Since these techniques were first used, the technology of nanocrystal synthesis has matured significantly and new materials with outstanding photophysical stability have been reported. Here we review our recent work that shows how cryogenic spectroscopy of single nanocrystals probes the fundamental excitonic structure of the band edge, revealing spectral fingerprints that are highly sensitive to a range of photophysical properties as well as nanocrystal morphology. In particular, spectral and temporal signatures of biexciton and trion emission are revealed and their relevance to emerging technologies discussed. In addition, we show how high resolution excitation spectroscopy can provide information on external processes that ultimately limit the coherence of the nanocrystal band-edge states. Overall we demonstrate how cryogenic single nanocrystal spectroscopy can be used as a vital tool for understanding fundamental photophysics and guiding the synthesis of new nanocrystal materials.
dc.language.isoen
dc.title.enCryogenic Single Nanocrystal Spectroscopy: Reading the Spectral Fingerprint of Individual CdSe Quantum Dots
dc.typeCommunication dans un congrès
dc.subject.halPhysique [physics]/Physique [physics]/Agrégats Moléculaires et Atomiques [physics.atm-clus]
bordeaux.countryBE
bordeaux.conference.cityBrussels
bordeaux.peerReviewedoui
hal.identifierhal-00997146
hal.version1
hal.invitedoui
hal.proceedingsoui
hal.conference.end2014-04-17
hal.popularnon
hal.audienceInternationale
dc.subject.itSingle nano-particle
dc.subject.itCdSe
dc.subject.itQuantum rods
dc.subject.itTrion
dc.subject.itBiexciton
dc.subject.itNano-optics
dc.subject.itSingle nano-particle.
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-00997146v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.au=FERN%C3%89E,%20Mark%20J.&SINITO,%20Chiara&LOUYER,%20Yann&TAMARAT,%20Philippe&LOUNIS,%20Brahim&rft.genre=unknown


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