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1、www.advmat.dewww.MaterialsViews.comNovelHighlyConductiveandTransparentGraphene-BasedConductorsIvanKhrapach,FreddieWithers,ThomasH.Bointon,DmitryK.Polyushkin,WilliamL.Barnes,SaverioRusso,andMonicaF.Craciun*COMMUNICATIONFuturewearableelectronics,displaysandp
2、hotovoltaicdevicesopticaltransparencyandmacroscopicroomtemperaturemeanrequirematerialswhicharemechanicallyflexible,lightweightfreepathhasnotbeendemonstratedsofarinanyotherdopedandlow-cost,inadditiontobeingelectricallyconductiveandgraphenesystem,andopensnewa
3、venuesforgraphene-basedopticallytransparent.[1–3]Nowadaysindiumtinoxide(ITO)isoptoelectronics.themostwidespreadtransparentconductorinoptoelectronicPristineFLGrangingfromtwo-tofive-layers(2Lto5L)wereapplications,howeverthemechanicalrigidityofthismaterialobta
4、inedbymicromechanicalcleavageofnaturalgraphite[5]onlimitsitsuseforfutureflexibledevices.IntheracetofindnovelglassorSiO2/Si.ThenumberoflayerscomposingeachFLGtransparentconductors,graphenemonolayersandmultilayerswasdeterminedbyopticalcontrastandRamanspectrosco
5、pyaretheleadingcandidatesastheyhavethepotentialtosatisfy(seeSupportingInformation).Theintercalationprocesswithallfuturerequirements.Graphene,one-atom-thicklayerofFeCl3wasperformedinvacuumwiththetwo-zonevaportrans-carbonatoms,istransparent,[4]conducting,[5,
6、6]bendable[7]andportmethod.[15]FeClissublimatedinthelowesttemperature3yetoneofthestrongestknownmaterials.[8]However,theusezoneanditdiffusestothehighertemperaturezonewheretheofgrapheneasatrulytransparentconductorremainsagreatintercalationofFLGtakesplace(see
7、ExperimentalSection).challengebecausethelowestvaluesofitssheetresistance(Rs)Thestructural,electricalandopticalcharacterizationiscar-demonstratedsofarareabovethevaluesofcommerciallyavail-riedoutbymeansofthreecomplementaryexperimentaltech-ableITO(i.e.10Ω/at
8、anopticaltransmittanceTr=85%[9]).niques:low-temperaturechargetransport,opticaltransmissionCurrentlymanyeffortsareconcentratedondecreasingtheRsofandRamanspectroscopy.graphene-basedmaterialswhilemaintainingahig
