高電場下PET薄膜的電致發(fā)光研究.pdf

1、哈爾濱理工大學(xué)碩士學(xué)位論文高電場下PET薄膜的電致發(fā)光研究姓名：鐘志白申請學(xué)位級別：碩士專業(yè)：材料物理與化學(xué)指導(dǎo)教師：林家齊20070301哈爾演理T人學(xué)T學(xué)碩l學(xué)位論文StudyontheElectroluminescenceofthePETFilmsundertheHighElectricFieldAbstractElectroluminescence(EL)hasbeenwidelyusedasatooltostudythetra

2、pstructure、thestorageandtransportofspacechargeandthestructuretransitionandmolecularmotionTheELcallbeenusedtostudythetheory，meanwhileitalsocallbeusedtoanalyzingmaterialelectricalandopticalcharacteristicsThecomplicationoft

3、hepolymericmolecularstructureanditsmotion，willcausetheELmuchmorecomplexWedesignedanexperimentalsetuPformeasuringtheELofthepolymerUndertheconditionwithoutloading，themeanvalueofphotocounter’Sdarknoiseis16cps(testtemperatur

4、e：20。C)，itssensitivityis2310“7W；opticalspectrometer’Ssensitivityis3010“’W，theresolutionis4nm，repetitiveerrorisnotgreaterthan2nmTheEL’SstreEIgthenandthespectraofPETfilmundertheDCfieldweretestedbythesetupTheEL’Sstrengtheno

5、fPETfilmincreasesasthefields，andeverymaterialhasanEL’SthresholdelectricfieldwhichdecidedbythematerialandthetestedvaluesdecidedbythesensitivityofthetestsetThethresholdelectricfieldofPETcalculatedbythedatesiS35MV／cmBecause

6、oftheVanderwalls’forcestheELlinedwiththeelectricfieldAndtheSchottkybarrier’SheightdecidestheamoutoftheinjectedelectronThespectraofPETismadeupoftheexcimerfluorescencepeakat390nm450nmthemonomerphosphorescencepeakat575nmand