| abstract |
The present invention is an organic electroluminescence element, which has a structure in which at least an anode 2, a light-emitting layer 3, and a cathode 4 are laminated in this order, and the light-emitting layer 3 contains a first host material and a second host material with electron transport properties (Below 20% by weight of the total amount of the host) and as the luminescent material as a dopant, both the first host material and the second host material have the lowest excited triplet energy level higher than the lowest excited triplet energy level of the luminescent material. This device can suppress the degradation of performance over time during driving, and has a long life. |