| 摘要 |
<p>Disclosed is an organic electroluminescent element which is characterized by comprising an organic thin film layer between a negative electrode and a positive electrode, said organic thin film layer being composed of one or more layers and containing an organic compound represented by formula (1) and a phosphorescent material. The organic electroluminescent element is also characterized in that the triplet energy Eg(T) of the organic compound represented by formula (1) is larger than the triplet energy Eg(T) of the phosphorescent material. (In formula (1), Ar1 represents a fused aromatic hydrocarbon ring selected from among benzophenanthrene rings, dibenzophenanthrene rings, chrysene rings, benzochrysene rings, dibenzochrysene rings or the like which may have a substituent, and the substituent is a halogen atom, an alkoxy group, an aryloxy group, a cyano group, an arylsilyl group, an alkylsilyl group, an alkylarylsilyl group, a heterocyclic group or the like.)</p> |
