Nws raug qhia tias cov kws tshawb fawb tau tshawb pom tias cov khoom siv hluav taws xob uas tsis muaj lub tshuab tsis muaj lub xaim hluav taws xob (hu ua "dawb radicals") yuav siv los ua kom muaj cov teeb pom kev siv hluav taws xob (OLEDs) radical cov ntaub ntawv. Txwv tsis pub tshaj tawm.
Cov dawb radicals feem ntau paub txog lawv cov tshuaj lom neeg tshua thiab cov teeb meem, nrog rau tib neeg kev noj qab haus huv thiab cov txheej txheem ozone. Tam sim no, los ntawm cov kev tshawb fawb ntawm cov kws tshawb fawb, cov dawb radical OLEDs yuav yog lub hauv paus ntawm cov cim ntxiv thiab cov teeb pom kev zoo.
Pab neeg ua haujlwm ntawm Cambridge University thiab Jilin University tau piav txog cov "sib txuas" thiab "downward" cov yam ntxwv ntawm cov dawb radical, uas yog hu ua "dual" electronic state. Thaum cov radical OLEDs yog energized, muaj lub siab-luminance ob-excited xeev yog generated, thiab sib sib zog nqus liab teeb nrog kev ua tau zoo ntawm ze li ntawm 100% yuav tsum tau emitted.
Rau cov tebchaw ib txwm muaj (xws li, cov tsis muaj kev ywj pheej uas tsis muaj kev sib txuas ntawm electrons), quantum quab yuam spins yuav tsum tau them nyiaj rau daim ntawv 25% kajsiab "single-state" thiab 75% tsaus "triplet" hauv cov haujlwm ntawm OLED. Cov dawb radicals muab ib qho kev daws teeb meem zoo tshaj plaws rau cov teeb meem kev hloov qis tshaj plaws uas tau plagu lawm cov neeg tshawb nrhiav txij li thaum lub advent ntawm OLEDs hauv lub 1980s.
Dr. Emile Evans, tus thawj xibfwb ntawm Richard Professor ntawm Cavendish Laboratory, tau hais tias: "Nyob rau ntawm qhov chaw dawb, cov radicals dawb hauv OLEDs yuav tsum tsis txhob muaj tej yam kev coj ua, uas ua rau peb cov kev tshawb pom kuj ceebtoom. yog cov luminescent abnormal thiab khiav hauv OLEDs nrog cov khoom txawv txawv. " Thaum sib cais nyob hauv ib lub party matrix thiab zoo siab los ntawm ib lub laser, cov radicals atypically muaj ib cov lus ceeb toom nyob ze rau luminescence. Tus cwj pwm luminescent siab heev yog txhais ua cov duab ci ci ntsa iab, tab sis nws muaj lwm txoj hauv kev: nyob rau hauv cov khoom siv uas xa cov electrons mus rau hauv lub tshuab hluav taws xob tsis muaj zog hauv cov dawb radicals thiab rub cov electrons tawm ntawm cov qib qis dua. Ua ke nrog lwm feem ntawm lub molecule, ib lub siab kaj ob lub xeev raug tsim.
Nyob rau hauv lub neej yav tom ntej, no high-efficiency Diam duab-radical diodes tej zaum yuav tsav cov khoom tshiab. Tam sim no, cov neeg tshawb nrhiav tau tshawb nrhiav cov dawb radicals lwm cov teeb pom kev zoo, vam tias cov dawb radicals tau txais kev tshoov siab los ntawm lwm cov ceg ntoo ntawm kev tshawb fawb organic electronics.
