Transferred vertically aligned N-doped carbon nanotube arrays use in dye-sensitized solar cells as counter electrodes

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1、ViewOnlineChemCommDynamicArticleLinksCitethis:DOI:10.1039/c1cc10471cwww.rsc.org/chemcommCOMMUNICATIONTransferredverticallyalignedN-dopedcarbonnanotubearrays:useindye-sensitizedsolarcellsascounterelectrodeswababKunSeokLee,zWonJunLee,zNam-GyuPark,SangO

2、ukKim*andaJongHyeokPark*Received24thJanuary2011,Accepted15thFebruary2011DOI:10.1039/c1cc10471c9WepreparedverticallyalignednitrogendopedcarbonnanotubesperformanceoftheCNTelectrode.Inaddition,theseCNT(CNTs)onarigidglasssubstrateorflexibleplasticsubstrat

3、eelectrodeswerepreparedviaheattreatmentattemperaturesviaa‘growth-detachment-transfer’processandtheverticallyaboveB4001Ctodecomposethepolymerbindersand7,8alignedN-dopedCNTarraysareemployedascounterelectrodesadditives,whichhindersthedevelopmentofflexibl

4、eDSSCfornoveldye-sensitizedsolarcells.systemsbasedonplasticsubstrateswithlowthermalstability.Inthisreport,wedemonstratethatverticallyalignednitrogenTypicaldye-sensitizedsolarcells(DSSCs)consistofinter-dopedCNT(N-CNT)counterelectrodescanbeemployedinco

5、nnectedTiO2nanocrystals,dyesensitizers,iodine/iodideDSSCsviaa‘growth-detachment-transfer’process(Fig.1A).electrolytes,andthinplatinum(Pt)counterelectrodesdepositedThisuniqueapproachhasseveraladvantagesoverthepreviousontransparentconductiveoxides(TCOs

6、).Suchdevicesystemsones:(1)VerticallyalignedCNTarraysprovideanextremelyaregenerallylessexpensivethanconventionalinorganiclargesurfaceareawithahighlyorderedgeometry.(2)N-CNTs1possesshighelectricalconductivityandcatalyticactivity.10photovoltaicdevices.

7、Duringthelasttwodecades,muchefforthasbeenfocusedontheoptimizationofTiO2nanocrystals,Whenelectron-richnitrogenissubstitutivelydopedinaCNTdyesensitizers,andelectrolytes.BecausePtexhibitshighgraphitelayer,thebandgapoftheCNTisreducedtoform11electrocatatyt

8、icactivitytowardtheiodide/triiodideredoxcouple,metallicCNTswithhighcatalyticactivity.(3)ThisapproachitisthecommonredoxrelayformostDSSCs.However,issubstrate-independent.AftergrowingtheverticalN-CNTsDownloadedbyLanzhouUniversityon05March2011thePtcounte