Terahertz and Infrared Spectroscopy of Gated Large-Area Graphene

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dc.citation.firstpage3711
dc.citation.issueNumber7
dc.citation.journalTitleNano Letters
dc.citation.lastpage3715
dc.citation.volumeNumber12
dc.contributor.authorRen, Lei
dc.contributor.authorZhang, Qi
dc.contributor.authorYao, Jun
dc.contributor.authorSun, Zhengzong
dc.contributor.authorKaneko, Ryosuke
dc.contributor.authorYan, Zheng
dc.contributor.authorNanot, Sébastien L.
dc.contributor.authorJin, Zhong
dc.contributor.authorKawayama, Iwao
dc.contributor.authorTonouchi, Masayoshi
dc.contributor.authorTour, James M.
dc.contributor.authorKono, Junichiro
dc.contributor.orgApplied Physics Program
dc.date.accessioned2016-06-08T16:16:52Z
dc.date.available2016-06-08T16:16:52Z
dc.date.issued2012
dc.description.abstractWe have fabricated a centimeter-size single-layer graphene device with a gate electrode, which can modulate the transmission of terahertz and infrared waves. Using time-domain terahertz spectroscopy and Fourier-transform infrared spectroscopy in a wide frequency range (10–10 000 cm–1), we measured the dynamic conductivity change induced by electrical gating and thermal annealing. Both methods were able to effectively tune the Fermi energy, EF, which in turn modified the Drude-like intraband absorption in the terahertz as well as the “2EF onset” for interband absorption in the mid-infrared. These results not only provide fundamental insight into the electromagnetic response of Dirac fermions in graphene but also demonstrate the key functionalities of large-area graphene devices that are desired for components in terahertz and infrared optoelectronics.
dc.identifier.citationRen, Lei, Zhang, Qi, Yao, Jun, et al.. "Terahertz and Infrared Spectroscopy of Gated Large-Area Graphene." <i>Nano Letters,</i> 12, no. 7 (2012) American Chemical Society: 3711-3715. http://dx.doi.org/10.1021/nl301496r.
dc.identifier.doihttp://dx.doi.org/10.1021/nl301496r
dc.identifier.urihttps://hdl.handle.net/1911/90466
dc.language.isoeng
dc.publisherAmerican Chemical Society
dc.rightsThis is an author's peer-reviewed final manuscript, as accepted by the publisher. The published article is copyrighted by the American Chemical Society.
dc.subject.keywordgraphene
dc.subject.keywordFermi level
dc.subject.keywordterahertz dynamics
dc.subject.keywordinfrared spectroscopy
dc.titleTerahertz and Infrared Spectroscopy of Gated Large-Area Graphene
dc.typeJournal article
dc.type.dcmiText
dc.type.publicationpost-print
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