| abstract |
The organic electroluminescent device material used together with at least one phosphorescent metal complex of the present invention comprises a compound containing a specific heterocyclic structure. The organic electroluminescence element material is used as a host material or a hole transport material. An organic electroluminescent element in which one or more organic thin film layers are sandwiched between a cathode and an anode, and at least one of the organic thin film layers contains the material for the organic electroluminescent element has high luminous efficiency, There are no defects, excellent heat resistance, and long life. |