| 摘要 |
An organic electroluminescent device including an anode ( 1 ), a first emitting layer ( 3 ), a carrier barrier layer ( 4 ), a second emitting layer ( 5 ), and a cathode ( 7 ) stacked in that order; the first emitting layer ( 3 ) including a host material of a compound represented by X-(Y)<SUB>n</SUB>, and a dopant material of a compound containing a fluoranthene skeleton or a perylene skeleton; the affinity level of the carrier barrier layer ( 4 ) being smaller than the affinity level of the second emitting layer ( 5 ) in an amount of 0.2 eV or more; and the ionization potential (Ie 1 ) of the carrier barrier layer ( 4 ) and the ionization potential (Ih 1 ) of the first emitting layer ( 3 ) satisfying Ie 1 <Ih 1 +0.1 (eV).
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