Nitrogen-containing heterocyclic derivative, an organic electroluminescence element electron transport material, an organic electroluminescence device and made by using the same

摘要

Nitrogen-containing heterocyclic certain compounds having urea structure, the electron transport material comprising the same, and between the cathode and the anode comprises an electron transport layer and the emitting layer, electron transport layer, wherein the nitrogen-containing or the electron transport material The organic electroluminescent device containing the heterocyclic derivative, to provide an organic EL device material for realizing the organic EL device has high luminous efficiency despite its low voltage.