Fluorescence Lifetime and Blinking of Individual Semiconductor Nanocrystals on Graphene

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dc.contributor.authorRogez, Benoitko
dc.contributor.authorYan, Heejunko
dc.contributor.authorLe Moal, Ericko
dc.contributor.authorLeveque-Fort, Sandrineko
dc.contributor.authorBoer-Duchemin, Elizabethko
dc.contributor.authorYao, Feiko
dc.contributor.authorLee, Young-Heeko
dc.contributor.authorZhang, Yangko
dc.contributor.authorWegner, K. Davidko
dc.contributor.authorHildebrandt, Nikoko
dc.contributor.authorMayne, Andrewko
dc.contributor.authorDujardin, Geraldko
dc.date.accessioned2021-01-28T06:14:00Z-
dc.date.available2021-01-28T06:14:00Z-
dc.date.created2021-01-26-
dc.date.created2021-01-26-
dc.date.issued2014-08-
dc.identifier.citationJOURNAL OF PHYSICAL CHEMISTRY C, v.118, no.32, pp.18445 - 18452-
dc.identifier.issn1932-7447-
dc.identifier.urihttp://hdl.handle.net/10203/280230-
dc.description.abstractA new class of optoelectronic nanodevices consisting of OD semiconductor nanocrystals and 2D single graphene layers is attracting much attention. In particular, such a system may be used to investigate and control the transfer of energy and charge in low-dimensional systems. To this end, the fluorescence dynamics of individual colloidal quantum dots (QDs) on graphene are investigated on both the 10(-9)-10(-8) s time scale (fluorescence lifetime) and the 10(0)-10(2) s time scale (blinking statistics) in this paper. We find that (i) a nonradiative energy transfer rate of approximate to 5 X 10(8) s(-1) is obtained from the reduced lifetimes of QDs on graphene as opposed to those on insulating substrates such as glass; (ii) QDs still exhibit fluorescence intermittency ("blinking") on graphene; (iii) the cumulative distribution functions of the "off" times may be described by power-law statistics; (iv) QD coupling to graphene increases the time spent in the "on" state while the time spent in the "off" state remains relatively unchanged; and (v) the fluorescence emission spectrum of the QDs is practically unaltered by the QD-graphene coupling.-
dc.languageEnglish-
dc.publisherAMER CHEMICAL SOC-
dc.titleFluorescence Lifetime and Blinking of Individual Semiconductor Nanocrystals on Graphene-
dc.typeArticle-
dc.identifier.wosid000340444500020-
dc.identifier.scopusid2-s2.0-84906237116-
dc.type.rimsART-
dc.citation.volume118-
dc.citation.issue32-
dc.citation.beginningpage18445-
dc.citation.endingpage18452-
dc.citation.publicationnameJOURNAL OF PHYSICAL CHEMISTRY C-
dc.identifier.doi10.1021/jp5061446-
dc.contributor.localauthorYan, Heejun-
dc.contributor.nonIdAuthorRogez, Benoit-
dc.contributor.nonIdAuthorLe Moal, Eric-
dc.contributor.nonIdAuthorLeveque-Fort, Sandrine-
dc.contributor.nonIdAuthorBoer-Duchemin, Elizabeth-
dc.contributor.nonIdAuthorYao, Fei-
dc.contributor.nonIdAuthorLee, Young-Hee-
dc.contributor.nonIdAuthorZhang, Yang-
dc.contributor.nonIdAuthorWegner, K. David-
dc.contributor.nonIdAuthorHildebrandt, Niko-
dc.contributor.nonIdAuthorMayne, Andrew-
dc.contributor.nonIdAuthorDujardin, Gerald-
dc.description.isOpenAccessN-
dc.type.journalArticleArticle-
dc.subject.keywordPlusCDSE QUANTUM DOTS-
dc.subject.keywordPlusENERGY-TRANSFER-
dc.subject.keywordPlusTRANSPARENT-
dc.subject.keywordPlusEMISSION-
dc.subject.keywordPlusINTERMITTENCY-
dc.subject.keywordPlusLUMINESCENCE-
dc.subject.keywordPlusENHANCEMENT-
dc.subject.keywordPlusINTENSITY-
dc.subject.keywordPlusDYNAMICS-
dc.subject.keywordPlusCARBON-
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