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146200912JOURNALOFHARBINUNIVERSITYOFSCIENCEANDTECHNOLOGYVol114No16Dec.20091,2,3,1(1.,150080;2.,150080;3.,450007):,.:,,700nm.,,.,2176eV.:;;;:O482.31:A:1007-2683(2009)06-0117-03PhotoluminescenceofPolyimideFilmsLICai2xia1,LINJia2qi2,ZHOUYan2ping3,NIHai2fang1(1.SchoolofAppliedScience,HarbinUniversityofScienceandTechnology,Harbin150080,China;2.TheStateKeyLaboratoryofMinistry,HarbinUniversityofScienceandTechnology,Harbin150080,China;3.HeNanElectricPowerSurveyandDesignInstitute,Zhengzhou450007,China)Abstract:Photoluminescenceintensity,spectrumandspectralabsorptionofpolyimidefilmsweremeasuredinPLmeasurementset2upandTU21901doublebeamUV2Visspectrophotometer.PLpropertyofPIfilmswasstudied.Theresultsshowedthat:PLintensityshowedexponentialdecayalongwiththemeasuringtime.PLspectrumwasconsistedoffluorescent,phosphorescentandinfraredregion,Thepeakregionnearby700nmisalittlehigher.De2cayvelocityofPLintensityreducedalongwithirradiationtime.PLspectrumpeakedatlongerwavelength.Andthemaximumofabsorptionwavelengthappearedredshift.TheenergygapofPIfilmswascalculatedabout2176eVac2cordingtothespectralabsorption.Keywords:polyimide;photoluminescence;absorptionedge;energygap:2009-05-21:(2008XQJZ037):(1982),,,E2mail:hustlicai1982@sohu.com.(1963),,,,.0(Polyimide2PI),,,.[1]..(Photoluminescence2PL)[2].,,[3].2050,.,[4-6].,(),[7].PI.,PI,PL,PI,PI.1.25m.HSJD40mm30nm.,XD2300,300K,10-4Pa.PL,,.,16cps(:300K),21310-17W;31010-17W,4nm,2nm..,,24h,TU21901PI.2211PLPLPI16h19h1,PI2,3PIPL.1,PIPL,PI,PL,PL,.2,,PL,PI,.3,PIPL,PI[8].PL400nm560nm700nm770nm.320450nmPI,PI,81114,PI[9].500600nmPI[8];68018nmPI,700nm[7].PI[8].,PI,,.320450nm72814nm,.,,,[9].212,..4.4PI4,PI,200320nm10,PIUVBUVC;320370nmUVA,PI4;,PI40819nm,PI(413);,(423),max,PI;420nm,1,PI.4PIonset450nm.:Eg(eV)=hv=hc/onset1241/onsetPIEg2176eV.3PIPLonset39512nm,,Eg3114eV,0138eV.PI,[2].3PL,PL400nm560nm700nm770nm.700nm.,,,.PI,2176eV.PI,PI.:[1]LAURENTC,MASSENESF,MAYOUXC.OpticalEmissionDuetoSpaceChargeEffectsinElectricallyStressedPolymers[J].In2sul.Mag.IEEETransonDEI,1997,4(5):585-603.[2],.[M].:,2004:3.[3],,.[J].,2008,29(6):873-875.[4],,.[J].,2003,24(5):493-496.[5],,,.Kapton2Al[J].,2007,21(6):577-580.[6].[D].:,2006.[7]MARYD,ALBERTINM,LAURENTC.UnderstandingOpticalEmissionsfromElectricallyStressedInsulatingPolymer:Electro2luminescenceinPETandPENfilms[J].Phys.D:Appl.Phys,1997,30(2):171-184.[8],,.[J].,2006,20(4):386-388.[9],,.[M].:,2005:19.(:)9116,:
本文标题:聚酰亚胺薄膜的光致发光研究
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