| abstract |
Dibenzofuran, carbazole, or dibenzothiophene skeleton, organic electroluminescent device material having a specific structure having a partial structure having a nitrogen atom as a hetero atom in the aromatic ring, and one or more layers including a light emitting layer between the cathode and the anode The organic thin film layer contains a phosphorescent material, and at least one of the organic thin film layers is formed at a low voltage by the organic electroluminescent element containing the organic electroluminescent element material of the present invention. Provided are an organic EL element having a high external quantum efficiency and a long lifetime even when driven, and an organic EL element material for realizing the organic EL element. |