PHOSPHORESCENT ORGANIC LIGHT EMITTING DEVICES HAVING A HOLE TRANSPORTING COHOST MATERIAL IN THE EMISSIVE REGION
申请人:Universal Display Corporation
公开号:US20140374728A1
公开(公告)日:2014-12-25
An improved OLED includes an emissive layer disposed between a cathode and an anode where the emissive layer includes a multi-component host material and a phosphorescent emitter material. The host material includes at least a first host compound and a second host compound, where the first host compound is hole-transporting host compound having the general formula wherein R
1
, R
2
, R
3
, R
4
, R
5
, and R
6
may be the same or different fluorine atom, chlorine atom, a deuterium atom, a cyano group, a trifluoromethyl group, a nitro group, linear or branched alkyl group (C1-C6), cyclo-alkyl group (C5-C10), linear or branched alkoxy group (C1-C6), cyclo-alkoxy group (C5˜C10), substituted or unsubstituted aromatic hydrocarbon group, substituted or unsubstituted aromatic heterocyclic group, substituted or unsubstituted condensed polycyclic aromatic group, r
1
, r
4
, r
5
=0, 1, 2, 3, or 4 r
2
, r
3
, r
6
;=0, 1, 2 or 3 n=0 or 1, and Ar
1
, Ar
2
, and Ar
3
may be the same or different, substituted or unsubstituted aromatic hydrocarbon group, substituted or unsubstituted aromatic heterocyclic group, substituted or unsubstituted condensed polycyclic aromatic group, deuterium substituted aromatic hydrocarbon group, deuterium substituted aromatic heterocyclic group, or deuterium substituted condensed polycyclic aromatic group.
改进的OLED包括一个放射性层,位于阴极和阳极之间,其中该放射性层包括多组分主体材料和荧光发射材料。主体材料包括至少第一主体化合物和第二主体化合物,其中第一主体化合物是具有一般式的空穴传输主体化合物,其中R1,R2,R3,R4,R5和R6可以是相同或不同的氟原子,氯原子,氘原子,氰基,三氟甲基基团,硝基基团,线性或支链烷基(C1-C6),环烷基(C5-C10),线性或支链烷氧基(C1-C6),环烷氧基(C5-C10),取代或未取代的芳香烃基,取代或未取代的芳香杂环基,取代或未取代的紧凑多环芳香基,r1,r4,r5 = 0,1,2,3或4 r2,r3,r6; = 0,1,2或3 n = 0或1,且Ar1,Ar2和Ar3可以是相同或不同的,取代或未取代的芳香烃基,取代或未取代的芳香杂环基,取代或未取代的紧凑多环芳香基,氘取代的芳香烃基,氘取代的芳香杂环基或氘取代的紧凑多环芳香基。