Organic electroluminescence element and electronic device

An organic electroluminescence device, comprising:

• a cathode,
• an anode, and
• an organic layer disposed between the cathode and the anode,
• wherein the organic layer comprises a layer that comprises a fluorescent emitting layer and
• the fluorescent emitting layer comprises a first compound of formula (P) and a second compound that is not the same as the first compound:
• wherein:
• Z is CRA or N;
• π1 is a substituted or unsubstituted aromatic hydrocarbon having 6 to 50 ring carbon atoms or a substituted or unsubstituted aromatic heterocyclic ring having 5 to 50 ring atoms;
• π2 is a substituted or unsubstituted aromatic hydrocarbon having 6 to 50 ring carbon atoms or a substituted or unsubstituted aromatic heterocyclic ring having 5 to 50 ring atoms;
• RA, RB, and RC are each independently a hydrogen atom or a substituent, when RA, RB, or RC is the substituent, the substituent is independently a halogen atom, a cyano group, a substituted or unsubstituted alkyl group having 1 to 20 carbon atoms, a substituted or unsubstituted alkenyl group having 1 to 20 carbon atoms, a substituted or unsubstituted alkynyl group having 1 to 20 carbon atoms, a substituted or unsubstituted cycloalkyl group having 3 to 20 ring carbon atoms, an amino group, a substituted or unsubstituted alkoxy group having 1 to 20 carbon atoms, a substituted or unsubstituted fluoroalkyl group having 1 to 20 carbon atoms, a substituted or unsubstituted fluoroalkoxy group having 1 to 20 carbon atoms, a substituted or unsubstituted aryloxy group having 6 to 50 ring carbon atoms, a substituted or unsubstituted alkylthio group having 1 to 20 carbon atoms, a substituted or unsubstituted arylthio group having 6 to 50 ring carbon atoms, a group of —Si(R101)(R102)(R103), a group of —N(R104)(R105), a substituted or unsubstituted aryl group having 6 to 50 ring carbon atoms, or a substituted or unsubstituted heteroaryl group having 5 to 50 ring atoms;
• R101 to R105 are each independently a hydrogen atom, a substituted or unsubstituted alkyl group having 1 to 20 carbon atoms, a substituted or unsubstituted cycloalkyl group having 3 to 20 ring carbon atoms, a substituted or unsubstituted aryl group having 6 to 50 ring carbon atoms, or a substituted or unsubstituted heteroaryl group having 5 to 50 ring atoms;
• each of n and m is an integer of 1 or more and 4 or less;
• adjacent RA's are bonded to each other to form a ring structure or not bonded to each other thereby failing to form a ring;
• adjacent RB's are bonded to each other to form a ring structure or not bonded to each other thereby failing to form a ring;
• and
• adjacent RC's are bonded to each other to form a ring structure or not bonded to each other thereby failing to form a ring.