Using the Plasmon Linewidth To Calculate the Time and Efficiency of Electron Transfer between Gold Nanorods and Graphene

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dc.citation.firstpage11209en_US
dc.citation.issueNumber12en_US
dc.citation.journalTitleACS Nanoen_US
dc.citation.lastpage11217en_US
dc.citation.volumeNumber7en_US
dc.contributor.authorHoggard, Annelien_US
dc.contributor.authorWang, Lin-Yungen_US
dc.contributor.authorMa, Luluen_US
dc.contributor.authorFang, Yingen_US
dc.contributor.authorYou, Geen_US
dc.contributor.authorOlson, Janaen_US
dc.contributor.authorLiu, Zhengen_US
dc.contributor.authorChang, Wei-Shunen_US
dc.contributor.authorAjayan, Pulickel M.en_US
dc.contributor.authorLink, Stephanen_US
dc.contributor.orgLaboratory for Nanophotonicsen_US
dc.date.accessioned2015-03-16T16:56:09Zen_US
dc.date.available2015-03-16T16:56:09Zen_US
dc.date.issued2013en_US
dc.description.abstractWe present a quantitative analysis of the electron transfer between single gold nanorods and monolayer graphene under no electrical bias. Using single-particle dark-field scattering and photoluminescence spectroscopy to access the homogeneous linewidth, we observe broadening of the surface plasmon resonance for gold nanorods on graphene compared to nanorods on a quartz substrate. Because of the absence of spectral plasmon shifts, dielectric interactions between the gold nanorods and graphene are not important and we instead assign the plasmon damping to charge transfer between plasmon-generated hot electrons and the graphene that acts as an efficient acceptor. Analysis of the plasmon linewidth yields an average electron transfer time of 160 ± 30 fs, which is otherwise difficult to measure directly in the time domain with single-particle sensitivity. In comparison to intrinsic hot electron decay and radiative relaxation, we furthermore calculate from the plasmon linewidth that charge transfer between the gold nanorods and the graphene support occurs with an efficiency of ∼10%. Our results are important for future applications of light harvesting with metal nanoparticle plasmons and efficient hot electron acceptors as well as for understanding hot electron transfer in plasmon-assisted chemical reactions.en_US
dc.identifier.citationHoggard, Anneli, Wang, Lin-Yung, Ma, Lulu, et al.. "Using the Plasmon Linewidth To Calculate the Time and Efficiency of Electron Transfer between Gold Nanorods and Graphene." <i>ACS Nano,</i> 7, no. 12 (2013) American Chemical Society: 11209-11217. http://dx.doi.org/10.1021/nn404985h.en_US
dc.identifier.doihttp://dx.doi.org/10.1021/nn404985hen_US
dc.identifier.urihttps://hdl.handle.net/1911/79345en_US
dc.language.isoengen_US
dc.publisherAmerican Chemical Societyen_US
dc.rightsThis is an author's peer-reviewed final manuscript, as accepted by the publisher. The published article is copyrighted by the American Chemical Societyen_US
dc.subject.keywordplasmon dampingen_US
dc.subject.keywordhot electronsen_US
dc.subject.keywordone-photon photoluminescenceen_US
dc.subject.keywordsingle-particle spectroscopyen_US
dc.subject.keywordsurface plasmon resonanceen_US
dc.subject.keywordgrapheneen_US
dc.subject.keywordplasmon linewidthen_US
dc.titleUsing the Plasmon Linewidth To Calculate the Time and Efficiency of Electron Transfer between Gold Nanorods and Grapheneen_US
dc.typeJournal articleen_US
dc.type.dcmiTexten_US
dc.type.publicationpost-printen_US
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