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1、INVESTIGArrIONONTHESYNTHESISANDAPPLICATIONPERFoRMANCEOFCoUNTERELECTRoDEMATERIALSINDYESENSITIZEDSoLARCELLADissertationSubmittedtotheGraduateSchoolofHenanNormalUniversityinPartialFulfillmentoftheRequirementsfortheDegreeofM

2、asterofScienceByTaoWenguangSuperVisor：ProfKaiJiangMay2013ABSTRACTDyesensitizedsolarcell(DSSC)reprentsatypeofinexpensiveandgreenphotovoltaicdevicesInDSSC，counterelectrodeplaysimportantrolesincatalyzingtheredoxof13。／I’coup

3、leinelectrolyteandtransferringofelectronsThecommonlyemployedplatinum(Pt)basedcounterelectrodesuffersfromhighcost，ExplorationofcounterelectrodematerialswithlowPtornon—PtisofsignificantscientificmeanInthisthesis，wesystemat

4、icallyinvestigatedthesynthesisofaseriesofcounterelectrodematerialsincludingPtGraphenecomposite，polyaniline(PANI)，polypyrrolegraphene(PPY—graphene)compositeandtheeffectofthemontheperformanceofDSSCThemaincontentareshownasf

5、ollows(1)Pt—graphenecompositewassynthesizedviasimultaneousCOreductionofpoly(diallyldimethylammoniumchloride)functionalizedgrapheneoxideandchloroplatinicacidbysodiumborohydrideThecompositedemonstratedhighcatalyticactivity

6、ontheredoxof13／I。coupleinelectrolyteandexcellentconductivityThecompositewithPtcontentof60％offeredoverallphotovoltaicefficiencyof608％，whichisapparentlyhigherthanthatwithmerePtcounterelectrode(571％)(2)Net。shapedPANIcounter

7、electrodesWasfabricatedbyinsitupolymerizationonthesurfaceofconductiveglass，theaffordedtransparentPANIcounterelectrodecanbeusedindoublesideactiveDSSCWhentheincidentlightWasilluminatedfrombothphotoanodeandcounterelectrode，

8、thecellofferedphotovoltaicefficiencyof624％and406％theformerishigherthanthatbasedonplatinizedcounterelectrodes(603％)(3)PPY’graphenecompositewassynthesizedusingFe203clustersastemplatethecompositecounterelectrodeexhibitedhig

9、hcatalyticactivityontheredoxof13‘／I。couple，thecompositecaneffectivelyreducethechargetransferresistanceatcounterelectrode／electrol”einterfaceTheDSSCusingthiscompositeofferedaphotovoltaicefficiencyof435％，whichachieved85％of

10、theefficiencyinDSSCbasedonplatinizedcounterelectrode(4)G一5b253compositesweresynthesizedviaafacilesolvothermalmethodTheSb2S3nanoparticleswerehomogeneouslyscatteredontothegraphenesheet，andtheinteractionbetweenSb2S3andgraph

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