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1、畢業(yè)設(shè)計(jì)(論文)摘要OLED具有全固態(tài)、主動(dòng)發(fā)光、高對(duì)比度、超薄、低功耗、無(wú)視角限制、響應(yīng)速度快、低電壓直流驅(qū)動(dòng)、工作溫度范圍寬、易于實(shí)現(xiàn)柔性顯示和3D顯示等諸多優(yōu)點(diǎn),將成為未來(lái)20年最具“錢景”的新型顯示技術(shù)。同時(shí),由于OLED具有可大面積成膜、功耗低以及其它優(yōu)良特性,因此還是一種理想的平面光源,在未來(lái)的節(jié)能環(huán)保型照明領(lǐng)域也具有廣泛的應(yīng)用前景。本文將系統(tǒng)介紹OLED的發(fā)展背景、發(fā)展史、制備及應(yīng)用,介紹了有機(jī)電致發(fā)光器件(OLED)的結(jié)構(gòu)和發(fā)光機(jī)理。典型的傳統(tǒng)OLED是生長(zhǎng)在透明的陽(yáng)極例如ITO玻璃上的,發(fā)射出來(lái)的光是由最底層襯底透出,這使得它與其他電子元件如
2、硅基顯示驅(qū)動(dòng)器的集成變得非常復(fù)雜。因此,理想的做法是研發(fā)一種OLED,其光的發(fā)射由器件頂部的透明電極透出。重點(diǎn)介紹一種具有陰極作為底層接觸層,陽(yáng)極ITO薄膜作為頂部電極的表面發(fā)射型或者說(shuō)有機(jī)“反轉(zhuǎn)”的LED(OILED)。介紹了該器件的制備工藝,對(duì)該OILED的I一V特性及EL譜進(jìn)行了測(cè)試,發(fā)現(xiàn)與傳統(tǒng)的OLED相類似,而工作電壓有所升高,效率一定程度上降低。為了進(jìn)一步改善器件性能,我們對(duì)器件增加了保護(hù)層(PL),研究了PL對(duì)OILED器件性能的影響。最后概述了器件的技術(shù)進(jìn)展和應(yīng)用前景,并展望了未來(lái)OLED發(fā)展的方向。關(guān)鍵詞:有機(jī)電致發(fā)光器件,有機(jī)反轉(zhuǎn)電致發(fā)光器
3、件,發(fā)光機(jī)理,保護(hù)層(PL),陽(yáng)極ITO薄膜41畢業(yè)設(shè)計(jì)(論文)AbstractOLEDhasasolidstate,self-luminous,highcontrast,ultra-thin,lowpowerconsumption,viewingangle,fastresponse,low-voltageDCdrive,theoperatingtemperaturerange,easytoimplementmanyoftheadvantagesofflexibledisplaysand3Ddisplayswillbecomethefuture20yearso
4、fthemost"moneyscene"ofthenewdisplaytechnology.Also,becauseOLEDhasalarge-areafilm,lowpowerconsumption,andotherfinefeatures,soanidealplanelightsource,alsohasbroadapplicationprospectsinthefutureofenergysavinglightinginthearea.Inthispaper,thesystematicintroductionofOLEDdevelopmentbackgr
5、ound,historyofthedevelopment,preparationandapplication,thestructureoftheorganicelectroluminescentdevices(OLED)andtheluminescencemechanism.TypicaltraditionalOLEDisgrowthintransparentanodeITOglass,forexample,thelightisemittedbybottomgivesfullysubstrate,thismakesitandotherelectroniccom
6、ponentssuchasthattheintegrationofthesilicabaseddrivebecomeverycomplex.Therefore,theidealwayisdevelopingaOLED,itslightemissionfromthetopofthedevicegivesfullytransparentelectrodes.Focusesonacathodeasthebottomcontactlayer,theanodeofITOfilmsasthetopelectrodesurfaceemissionororganicLEDof
7、the"reverse"(OILED).Ofthedevicepreparationprocess,theOILEDI-VcharacteristicsandELspectraofthetest,foundthatsimilartotheconventionalOLED,theworkingvoltagewasincreasedefficiencytoacertainextentonthelower.Tofurtherimprovethedeviceperformanceofthedevicetoincreasetheprotectivelayer(PL),P
8、LOILEDdeviceperform