An organic electroluminescent device is provided and has at least one organic layer including a light-emitting layer between a pair of electrodes. The organic layer contains at least one compound represented by specific formula.
ORGANIC ELECTROLUMINESCENT ELEMENT
申请人:Konica MinoIta, Inc.
公开号:US20170125715A1
公开(公告)日:2017-05-04
Provided is an organic EL element having less color variation. The organic EL element (
1
) of the invention includes, between a pair of an anode (
4
) and a cathode (
14
), a first light emitting layer (
8
) composed of at least one layer and a second light emitting layer (
10
) composed of at least one layer, the layers being laminated from the anode (
4
) side, in which the volume concentration of the luminescent dopant included in the second light emitting layer (
10
) is higher than the volume concentration of the luminescent dopant included in the first light emitting layer (
8
).
New type of condensation of 5-pyrazolones unsubstituted at the nitrogen