Oled Zaub Ua Haujlwm Li Cas?

Cov qauv ntawm OLED qauv yog tsim los ntawm cov thin thiab cov pob indigenous Tin oxide (ITO) nrog ib tus neeg ua haujlwm, uas yog txuas nrog lub tshuab hluav taws xob zoo, thiab lwm cov hlau cathode, uas yog tsim rau hauv cov qauv nyuaj. Tag nrho cov txheej txheem muaj xws li ib lub qhov kev thauj (HTL), ib lub teeb emitting txheej (EL) thiab ib qho hluav taws xob xa hluav taws (ETL). Thaum lub hwj chim muab rau qhov kev tsim nyog, qhov zoo thiab qhov cathode tsub raug ua ke hauv lub teeb emitting teeb tsim teeb, thiab liab, ntsuab, thiab xiav RGB thawj cov xim yog tsim raws li cov zaub mov txawv txawv rau cov xim yooj yim. Cov cwj pwm ntawm OLEDs yog tus kheej-illumination, tsis zoo li TFT LCDs uas yuav tsum tau siv cov nraub qaum, ua kom pom kev thiab ci ntsa iab, ua raws li kev tsis tshua muaj qhov tsis zoo thiab kev txuag hluav taws xob, ua ke nrog cov lus teb ceev ceev, nyhav, thin thickness, yooj yim siv, thiab tus nqi qis Etc., yog suav hais tias yog ib qho ntawm cov khoom cog tseg ntawm xyoo pua 21st. Lub

Lub teeb emitting txujci ntawm organic lub teeb emitting diodes yog zoo li cov uas muaj teeb ci tawm hauv cov pa hluav taws xob. Thaum lub caij no raug rau kev ncaj nraim ntawm lub sijhawm tam sim no (DC), lub zog ntawm qhov siv hluav taws xob yuav tsav cov electrons thiab qhov rau qhov tshuaj ntawm cov cathode thiab anode, raws li, thaum ob qho tib si sib tham. Ua ke nrog, ua kom hu ua Electron-Hole Capture. Thaum cov tshuaj molecule zoo siab los ntawm sab nrauv lub zog, yog hais tias lub electron spin yog ua ke nrog hauv av lub xeev electron, nws yog ib tug singlet, thiab lub teeb tawm tawm hu ua Fluorescence; Lub xeev electrons thiab hauv av electron spins tsis sib npaug thiab sib npaug, thiab lawv raug hu ua triplets. Lub teeb lawv tso tawm yog qhov hu ua Phosphorescence. Lub

Thaum lub xaim hluav taws xob hauv lub xeev txoj kev rov los ntawm excimer high energy txog mus rau lub xeev uas tsis muaj zog, nws lub zog yuav raug nyob rau hauv daim ntawv ntawm Lub Teeb Tso lossis Kev Tshav Kub Heev. Lub photon feem yuav siv ua ib qho kev ua haujlwm. Txawm li cas los xij, qhov triplet phosphorescence tsis tuaj yeem tau cai tom chav tsev sov nyob hauv cov khoom siv organic fluorescent, li ntawd qhov theoretical txwv ntawm kev ua haujlwm ntawm PM-OLED tsuas yog 25% xwb. Lub

Lub ntsiab ntawm PM-OLED lub teeb emission yog siv lub zog theem ntawm cov khoom siv hloov cov hluav taws xob tso rau hauv photons, yog li peb muaj peev xwm xaiv cov khoom tsim nyog raws li lub teeb emitting txheej los yog dope lub zas nyob rau hauv lub teeb emitting txheej tau txais lub lub teeb xim peb xav tau. Tsis tas li, kev sib xyaw ua ke ntawm cov electrons thiab qhov yog feem ntau nyob rau hauv kaum ntawm nanoseconds (ns), yog li qhov lus teb ntawm PM-OLEDs ceev heev. Lub

PS: Cov qauv ntawm PM-OLED. Ib hom raug PM-OLED yog tsim los ntawm cov iav substrate, indium tin oxide (ATO) anode, lub cev organic emitting txheej (Emitting Material Txheej), ib lub cathode (Cathode), thiab cov zoo li, nyob rau hauv ITIN qhov sib tw organic lub teeb-emitting txheej yog sandwiched nrog ib tug hlau cathode zoo li ib tug nyuaj. Thaum qhov (qhov) txhaj rau hauv anode thiab electrons ntawm cathode (electron) raug ua ke nyob rau hauv cov organic lub teeb-emitting txheej, cov khoom siv organic yog kev txaus siab rau emit lub teeb. Lub

Tam sim no, cov txheej txheem multi-layer PM-OLED nrog kev ua kom zoo dua qub thiab feem ntau siv, ntxiv nrog rau iav substrate, yin thiab yang electrodes thiab organic lub teeb-emitting txheej, lub qhov txhaj tshuaj (HIL) thiab lub qhov kev thauj txheej tseem yuav tsum tau xa. Qhov Hole Transport Layer (HTL), Electron Transport Layer (ETL), Electron Inject Layer (EIL), thiab lwm yam., Thiab ib txheej insulating yog yuav tsum tau ntawm txhua tus txheej txheem thiab cov electrode, yog li lub thermal evaporation (Evaporate) yog ib qib high school thiab cov txheej txheem ntau lawm kuj nyuab heev. Vim tias cov ntaub ntawv organic thiab hlau yog qhov tseem ceeb heev rau cov pa oxygen thiab noo noo, tom qab tsim tau tiav lawm, lawv yuav tsum muaj kev tiv thaiv los ntawm kev cuam tshuam. Txawm hais tias PM-OLED xav tau los ntawm ntau cov yeeb yam organic, cov thickness ntawm cov organic thin film txheej yog tsuas 1,000 txog 1.500 Å (0.10 rau 0.15 um), thiab tag nrho cov thickness ntawm tag nrho cov zaub vaj huam sib luag (Vaj Huam Sib) yog tsawg tshaj 200 μm tom qab lub pob uas ntim nrog desiccant. (2mm), nrog kom zoo dua ntawm thinness