To improve the luminous efficiency of the device, sufficient to ensure driving stability, and to provide an organic electroluminescent device (organic EL device) and heterocyclic compound used therein with simple construction.
The organic EL device containing heterocyclic compound represented by the following general formula (I) and this organic layer.

Wherein X _1, X ₂ represents O, S or N-R. R represents hydrogen, an alkyl group, a substituted or unsubstituted aryl group. Ar _1, Ar _2, Ar ₃ and Ar ₄ represents a substituted or unsubstituted aryl group, Ar ₁ and Ar ₂ and Ar ₃ and Ar ₄ may form a nitrogen-containing heterocyclic ring together with the nitrogen to which they are attached . m and n is an integer of 1 or 2.