以ZNO为电极修饰层的高效率有机电致发光器件的研究

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1、北京交通大学硕士学位论文以ZnO为电极修饰层的高效率有机电致发光器件的研究姓名：姚辉申请学位级别：硕士专业：材料物理化学指导教师：王永生;张希清20061101jE基奎逼盔堂亟±堂焦监塞△B§!B△￡!ABSTRACTABSTRACT：Inthepastdecade，thestudyandappficadonoforganicfight-emissionhassccnsignificationprogress．Organiclight-emissiondevicehavemanyadvantagessuch∞

2、theirthilmess,selflight-emission,broadviewingangle,quickfesponse，easyfabrication,lowdriving-voltage，lowenergy-consumptioIl，lowcost，ctc．Itisthereforeverypossiblethatwillbloomethenextgenerationpaneldisplays．RecentadvancesinⅡ1eirdevelopmentandapplicationmrevie

3、wed．ButtheefficiencyofoLEDisnothi曲．Thishasbecometobealimitationforthedevelopmentofitsapplication．Intiffsarticle，werecalltheOLED’Sdevelopmenthistoryatfirst,andthenintroducesomegeneral蠡bficationandmaterialswhichoften却tusedinexperimentsandanalyzethebasictheory

4、ofoLED．AtIast,aaewfabricallOnisdevisedtori∞theefficieneyoftheOLED．Thenewkinddevicescontaintwotypefabrications：Oneiscathodemodificationdevices；11”otherOReisanodemodificationdevices．Contrastingthenewswiththeold'ITO／NPB／ALQ3，AL，Weoanfindtheonewithcathodemodifi

5、cationdevices，ITO／NPB／ALQ，／ZnO／AL,iSworse．Wllile，theanodemodificaftondevices，whichfabricationis瓢oIbo啪B／ALQt

6、地，ismuchbetterthantheolderinthelight-etficiencyandhaveahigherbreak-downvoltage．1kreasontothisphenomenonmaybeconcludedtOtwo嬲pects：IkfirstisZnOanodemod

7、ificationlayercanblockthehole’S嫡eetion毗theinterfaceofanodeandtheholetransporlinglayer,becauseValancebandofZnOisabout7．9eV,muchhigherthanNPB's．．nlisc蛆beattributedtothemorebalancedcarriersconcentrationinenfissivelayerandraisetheELefficiency；thesecondoneistheZ

8、nOanodemodificationcanimprovetheL,删accofITOandNPB．Tllismakethedraincurrentreduceandgetahi曲e历ciency．KEYWORDS：gnOmodificationlayer；ZnO；transportlayer；draincurrent；Interface；OLED(OrganicLight-EmittingDiodes)CLASSN0：学位论文版权使用授权书本学位论文作者完全了解北京交通大学有关保留、使用学位论文的规定。特授

9、权北京交通大学可以将学位论文的全部或部分内容编入有关数据库进行检索，并采用影印、缩印或扫描等复制手段保存、汇编以供查阅和借圈。同意学校向国家有关部门或机构送交论文的复印件和磁盘。(保密的学位论文在解密后适用本授权说明)学位论文作者签名：j何义兴导签字日期砂u(年／2月V百导师签名：≥榭凄签字日期：≯·Z年i；月，，日独创性声明本人声明所呈交的学位论文是本人在导师指导下进行的研究工作和取得的研究成果，