OLED muaj nws tus kheej lub teeb ci ntsa iab, lub kaum sab xis dav, teb sai, siv hluav taws xob tsawg, thiab tuaj yeem ua cov khoom siv zaub yooj ywm, suav tias yog hloov cov kua siv lead ua kua zoo tagnrho rau tiam tom ntej ntawm cov thev naus laus zis zaub. Lub hauv paus ntawm OLED zaub yog txhua lub sub-pixel nrog lub peev xwm los ua lub teeb ci OLED. Cov qauv yooj yim ntawm OLED lub teeb ci muaj xws li anode, cathode, thiab sandwiched ntawm lub teeb-emitting functional txheej, uas lub teeb-emitting txheej Raws li kev ua haujlwm ntawm OLED cov ntaub ntawv hauv lub cuab yeej thiab cov qauv cuab yeej, tuaj yeem sib txawv ua qhov txhaj tshuaj txheej (HIL), qhov thauj txheej (HTL), lub teeb-emitting txheej (EML) electron thauj txheej (ETL), electron txhaj tshuaj txheej (EIL) thiab lwm yam ntaub ntawv.
Hauv OLEDs, cov txheej txhaj tshuaj qhov thiab cov txheej thauj qhov siv los txhim kho kev txhaj tshuaj ntawm cov qhov, thaum cov txheej txhaj tshuaj electron thiab cov txheej thauj electron siv los txhim kho kev txhaj tshuaj ntawm cov electrons. Qee cov khoom siv teeb pom kev zoo nws tus kheej muaj lub luag haujlwm ntawm kev thauj mus los qhov lossis kev thauj mus los electron, feem ntau hu ua lub ntsiab luminescent; cov txheej khoom siv teeb pom kev zoo hauv ib qho me me ntawm cov doped organic fluorescent lossis phosphorescent dyes tuaj yeem tau txais los ntawm lub cev luminescent tseem ceeb ntawm kev hloov pauv zog, thiab los ntawm kev ntes thiab tso tawm xim sib txawv ntawm lub teeb, cov khoom siv teeb pom kev zoo doped feem ntau kuj raug xa mus rau lub cev luminescent lossis doped light-emitting.
2. Cov Ntsiab Cai Tseem Ceeb ntawm OLED Device Light Emission
Ib qho voltage raug siv rau lub OLED ntaus ntawv, thiab cov qhov thiab cov electrons raug txhaj rau hauv OLED txheej los ntawm anode thiab cathode ntawm lub ntaus ntawv, raws li. Cov qhov thiab cov electrons hauv cov khoom siv organic light-emitting composite thiab tso tawm lub zog, thiab ntxiv lub zog hloov pauv cov khoom siv organic light-emitting molecules, yog li lawv zoo siab rau lub xeev zoo siab, thiab tom qab ntawd cov exciton los ntawm lub xeev zoo siab rov qab mus rau hauv av xeev, lub zog hauv daim ntawv ntawm kev tso tawm, thiab thaum kawg paub txog electroluminescence ntawm OLED ntaus ntawv.
Feem ntau hais lus, zaj duab xis hauv OLED muaj xws li zaj duab xis electrode conductive thiab txhua txheej ntawm cov khoom siv organic teeb-emitting txheej. Tam sim no, cov anodes ntawm OLED cov khoom siv uas tau ua tiav ntau lawm feem ntau yog npaj siv cov thev naus laus zis tswj kev tswj hwm sib nqus. Cathodes thiab cov txheej organic luminescent feem ntau yog npaj los ntawm kev nqus tsev vacuum.
—— Tsab xov xwm no yog tso tawm los ntawmtshuab nqus tsev txheejGuangdong Zhenhua
Lub sijhawm tshaj tawm: Cuaj hlis-22-2023