| 主权项 |
1. An organic electroluminescence device comprising:
an anode; a cathode; and an emitting layer, wherein the emitting layer comprises a first compound and a second compound, the first compound is a delayed fluorescent compound, and the second compound is represented by a formula (2) below,where: R201 to R212 are each independently a hydrogen atom or a substituent;
when R201 to R212 each are a substituent, the substituent is selected from the group consisting of a substituted or unsubstituted alkyl group having 1 to 30 carbon atoms, a substituted or unsubstituted aryl group having 6 to 30 ring carbon atoms, a substituted or unsubstituted heterocyclic group having 5 to 30 ring atoms, a substituted or unsubstituted alkoxy group having 1 to 30 carbon atoms, a substituted or unsubstituted aryloxy group having 6 to 30 ring carbon atoms, a substituted or unsubstituted aralkyl group having 6 to 30 ring carbon atoms, a substituted amino group, a cyano group, and a halogen atom, and the substituents of R201 to R212 are optionally mutually bonded to form a cyclic structure. |
