Patent ID: 9461250
Filing Date: 2016-10-04
CPC Classification: C07D,C09K,H01L

Claim Text:
1. An organic electroluminescent device comprising: an anode, a plurality of organic layers, and a cathode piled one upon another on a substrate, wherein the plurality of organic layers comprise an organic layer containing a carbazole compound selected from a carbazole compound represented by general formula (1) or (2); wherein, in general formulas (1) and (2), each Ar is independently an aromatic group formed by removing 1 to 3 hydrogen atom(s) from an aromatic ring, the aromatic group being selected from aromatic hydrocarbon groups of 6 to 24 carbon atoms and aromatic heterocyclic groups of 3 to 23 carbon atoms; L is an aromatic group formed by removing 1 to 3 hydrogen atom(s) from an aromatic ring, the aromatic group being selected from aromatic hydrocarbon groups of 6 to 30 carbon atoms and aromatic heterocyclic groups of 3 to 30 carbon atoms; each of R wherein at least one of Ar and L are derived, the former as a monovalent organic group and the latter as an n-valent aromatic group, from an aromatic compound represented by the following general formula (3): wherein each X wherein the carbazole compound has a total of 20 to 80 carbon atoms, and wherein the carbazole compound is co-deposited with a phosphorescent dopant to form a single layer, said single layer being a light-emitting layer.