| abstract |
An organic electroluminescent device comprising a novel aromatic amine derivative having a specific structure and one or more organic thin film layers sandwiched between a cathode and an anode and having at least a light emitting layer, characterized in that at least one layer of the organic thin film layer, By providing the aromatic amine derivative as a component of the aromatic amine derivative alone or as a component of the mixture, the molecule is not crystallized, thereby improving the yield of the organic electroluminescent device when it is produced and providing an organic electroluminescent device having a long lifetime . |