有机半导体发光材料.ppt

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1、ElectroluminescentmaterialsforwhiteorganiclightemittingdiodesByKangbinLinChemicalSocietyReviews,2011,40(7):3467-3482.1ContentsIntroductionMultipleemittersSinglemolecularemittersConclutionandoutlook2OLEDschematicdrawingIntroduction3CIEchromaticitycoordinates(x,y)ColourR

2、enderingIndex(CRI)CorrelatedColourTemperature(CCT)4.Luminouspowerefficiency(lmW-1)5.Luminousefficiency(cdA-1)6.Internalquantumefficiency7.Externalquantumefficiency8.LifetimeIntroduction4Approachestowhiteelectroluminescencefromorganic/organometallicemitters.Introduction

3、5Stackedlayersemittingdifferentcolours10V(0.31,0.41)17cdA-1SamehostcompoundHighenergygapmCPandTAZ41.3lmW-16StackedlayersemittingdifferentcoloursAnode–cathodelayer(ACL)11.2V(0.33,0.31)10.5%15.1V(0.33,0.38)5.3%7MultipleemittersmixedinasinglelayerBlendingpolymersDopingsma

4、llmolecularemittersinawideenergygaphostMEH-PPV:5–28wt%rangePhasesegregatednanocrystallinePFOamorphousMEH-PPVdomainsEmissioncolour—voltage14V3.7cdA-18MultipleemittersmixedinasinglelayerMinimumintermoleculardistanceEncapsulatedintofunctionalizedcyclodextrins(0.282,0.336)

5、0.39cdA-19MultipleemittersmixedinasinglelayerThehost：chargetransport；blueemission.Secondnonemittingco-hostpolymer:PVKHolemobilityandMiscibilityMicrophase-separated6.2V(0.33,0.33)12.5cdA-120wt%2wt%0.5wt%DirectchargerecombinationLowconcentrationHost–guestenergytransfer14

6、lmW-110SinglemolecularemittersSimplifiedschemeNodeviceagingDifficultmoleculardesignandcolourpurityLowerefficiency11SinglemolecularemittersITO/PEDOT:PSS/lightemittinglayer/LiF/AlTerthiophenemonomercoreAlternativeterthiophene(0.31,0.42)0.35%Cross-likeexcimeraggregate12Si

7、nglemolecularemittersPlatinumcomplexsBluemonomer/RedexcimerGoodtransportpropertiesConcentrationoftheemitter10–20wt%Incandescentlamps(15%)13SinglemolecularemittersMonomersandElectromersPLandELspectraofTECEBfilmSignificantdifferenceBlueemissionpeakedat450nmSingletexciton

8、sVoltageindependent(0.298,0.310)8V(0.304,0.327)15V14SinglemolecularemittersBroadPLandELemissionSingleorganometallicco