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1、第X卷第X期发光学报VOLXNo.xXXXX年X月ChineSeJoUmalOfLUmineSCenCexxx.XXXX注:作者编排论文时,为了调整方便,页面布局可采用单栏排版。ArticleIDHighlyFlexibleGreenLight-emittingDiodeBasedonCsPbBr3PerovskiteQuantumDots(二号)GUOJie,LUMin,SUNSi-qi,HUQiang,ZHANGJia,BAIXue*(四号,需用*标明通信作者)(StateKeyLaboratoiyofIntegratedOptoelectronics,CollegeofElectroni
2、cScienceandEngineering,JilinUniversity,Changchun130012,China)*CorrespondingAuthor,E-mail:baix血.edM.cnAbstract:Flexibleinformationdisplayshavethepromisingpotentialforthefutureoptoelectronicapplication.However,achievingthehighlyefficientandstableflexiblelight-emittingdiodes(LEDs)isstillabigchallengedu
3、etothelimitedchoicesofelectrodematerialsandflexiblesubstrates.Herein,theflexibleperovskitelight-emitting(Iiodes(Pe-LEDs)bycombiningtheflexiblesubstratebasedonaphotopolymerwiththeCsPbBr?quantumdots(QDs)emittinglayerwerefabricated.Inordertoimproveelectronsinjectionandtransport,Agwasusedasthecathode.As
4、aresult,thegreenlightemittingPe-LEDswithhighluminanceof10325cd,m-2andhighcolorpuritywiththefull-width-at-half-maximum(FWHM)of19nmwereobtained.Inaddition,thePe-LEDsexhibitgoodflexibilityandmechanicalductility,andtheas-preparedflexibledevicestillmaintainsitsoptoelectronicperformanceevenafterrepeatedbe
5、nding100timesunderabendingangleofabout180o.Theresearchpresentsafurthersteptowardthefutureapplicationofflexibledisplays.(小五号)(一般应包括:目的,方法,结果,结论)(全文所有的O都用全角)Keywords:CsPbBnQDs;photopolymer:Agelectrode;flexiblelight-emittingdiodeCLCnumber:0482.31Documentcode:A基于CSPbBn钙钛矿量子点的高柔性绿光发光二极管(二号)郭洁,陆敏,孙思琪,胡强,张
6、佳,白雪*(四号,需用*标明通信作者)(吉林大学电子科学与工程学院,集成光电子学国家重点联合实验室,吉林长春130012)摘要:众所周知,柔性信息显示将在未来的光电应用中发挥重要作用。然而,由于电极材料和柔性衬底的选择有限,制备高效、稳定的柔性发光二极管仍然存在巨大的挑战。以光聚合物作为柔性衬底,CSPbBr3量子点作为发光层,成功制备柔性钙钛矿发光二极管。为了进一步改善电子的注入和传输,采用Ag作阴极。因此,得到具有高柔性的钙钛矿发光二极管,发光二极管的最高亮度为10325cdm2且有高色纯度(FWHM=I9nm)。此外,制备的钙钛矿发光二极管具有良好的柔性和机械延展性。在大约180的弯曲角
7、度下反复弯曲100次后,仍然保持着良好的器件性能。该研究为未来柔性显示器的应用奠定研究基础。关犍词,CSPbB门量子点;光聚合物;银电极:柔性发光二极管(文中若有公式,请用公式编辑器书写)1Introduction(四号)Overthepastfewyears,organic-inorganichybridperovskitematerialshaveattractedconsiderableresearchinterestduetotheirexcellentproperties,whichresultinthewideapplications,especiallyfortheflexibl
8、eoptoelectronicdevices1(两个及以上连续参考文献,标号之间用连字符连接).Nevertheless,organic-inorganichybridperovskitematerialsexhibittheinferiorstabilitythatrestrictingtheirpracticalapplications.Comparedtothehybridorganic-inorganichalidecounterparts,allinorganiccesiumleadhalidePerOVSkite(CSPbX3,X=Cl,Br,Iormixed)quantumdot
9、s(QDs)exhibitanenhancedstability,andmeanwhiletheyalsodemonstratearemarkableopticalandoptoelectronicperformanceincludingtheexcellentphotoluminescencequantumyield(PLQY)levelsreaching90%,highcolorpurity,widecolorgamut,andhighcharge-carriermobility.Therefore,theyhavethehugepotentialasanidealemissivelaye
10、rmaterialstofabricatehighlyefficientperovskitelight-emittingdiodes(Pe-LEDs)5.191Fordisplayapplications,flexible,curveddisplaysarekeyelementsinfutureoptoelectronicdevices1.However,therearestillchallengesinthefabricationofflexiblePe-LEDsowningtothesophisticatedfabricatedsteps,includingthesolution-proc
11、essedspin-coatingwithvariouschemicals,high-temperatureannealingandvacuumevaporation.Thesemultipleproceduresconsiderablylimitthedevicearchitecturedesignsaswellasthechoicesofappropriateflexiblesubstratesandelectrodes.Thesoftplasticsubstrateisgenerallyaproperalternativeforflexiblesubstrateduetoitslowco
12、standhighflexibility.However,theycanbeeasilycorrodedbysomeacidicreagentandorganicsolvents(toluene,chloroform)duringthefabricationofLEDs.Fortheelectrodes,althoughtheIndium-TinOxide(ITO)hasbeenwidelyusedintheLEDs,itisn,tsuitableforflexibleLEDsduetoitspoormechanicalrobustnessj.Therefore,toachievehigh-p
13、erfbrmanceflexiblePe-LEDs,weneedtochooseasuitableelectrodeandsubstratematerial.Here,wefabricatedaflexiblePe-LEDbasedonallinorganicCsPbBr?perovskiteQDsemissivelayers,inwhichtheperovskiteQDsexhibitanefficientgreenlightemissionwiththePLQYof75%.PhotopolymerNOA63wasusedasaflexiblesubstratebyspin-coatingi
14、tontheSisubstrateandbeingstrippedfromtheSi.Simultaneously,AgfilmwasusedasacathodebysimplethermalevaporationComparedwiththeITOelectrode,theAghashigherconductivityandbettermechanicalductility.Inaddition,Agascathodereducedenergybarrierbetweenthecathodeandelectrontransportlayer(ETL),whichismoreconducive
15、toelectroninjection.Consequently,theas-preparedgreenlightemittingPe-LEDsexhibitgoodflexibility,highbrightnessof10325cdm2,highcolorpuritywiththefull-width-at-half-maximum(FWHM)of19nmandlowthresholdvoltageabout2.6V.ThedeviceperformancestillmaintainedwhentheflexiblePe-LEDswererepeatedlybent100times.The
16、seresultsillustratethattheflexiblePe-LEDshaveagreatapplicationprospectinthefieldoftheflexibledisplays.2 Experiment(四号)2.1 Materials(五号)Cs2CO3,andPbBr2werepurchasedfromSigma-Aldrich.Oleicacid(OA,90%)and1-octadecene(ODE,90%)werepurchasedfromAlfaAesar.Oleylamine(OLA,80%-90%)waspurchasedfromAladdin.2.2 SynthesisofCsPbBr3QDsTheCsPbBr3perovskiteQDsweresynthesizedonthebaseofthepreviouslyreportedmethod.CesiumOleate(Cs-O