Patent ID: 9705099
Date: 2017-07-11
CPC Classifications: C09K,H01L,H05B

Claim:
1. An organic light emitting device comprising an anode, a cathode and a plurality of organic layers provided between them, the plurality of organic layers comprising: an emissive layer comprising a host material and a phosphorescent emitter material, the host material comprising: 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, Ar wherein the first host compound is selected from the group consisting of: