| 摘要 |
Provided is an organic electroluminescence device having high efficiency and a long lifetime. The organic electroluminescence device includes an anode; a cathode; and an organic compound layer interposed between the anode and the cathode, and including an emission layer formed of a first emission layer provided on an anode side and a second emission layer provided on a cathode side, in which the first emission layer contains a first host and a first dopant, the second emission layer contains a second host and a second dopant, the following relationship (a) is established between the first host and the first dopant, the following relationship (b) is established between the second host and the second dopant, and the following relationship (c) is established between the first host and the second host: |LUMO(H1)−LUMO(D1)|>|HOMO(H1)−HOMO(D1)|,  (a) |LUMO(H2)−LUMO(D2)|>|HOMO(H2)−HOMO(D2)|, and  (b) |HOMO(H1)|>|HOMO(H2)|.  (c)
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