IRIDIUM COMPLEX COMPOUND, MATERIAL FOR ORGANIC ELECTROLUMINESCENCE ELEMENT, ORGANIC ELECTROLUMINESCENCE ELEMENT, LIGHTING DEVICE, AND DISPLAY DEVICE

摘要

An organic electroluminescence element characterized in that at least one organic layer including a luminescent layer is held between a positive electrode and a negative electrode, and an iridium complex compound represented by general formula (5') is contained in at least one organic layer. (Rings An, Bm, and Bn represent a 5-membered or 6-membered aromatic hydrocarbon ring or aromatic heterocyclic ring; R1m, R2m, R1n, and R2n each independently represent a substituent; Ra, Rb, and Rc each independently represent a substituent; na and nc represent 1 or 2; nb represents an integer of 1-4; nR3 represents an integer of 1-4; X represents O, S, SiRz1Rz2, NRz1 or CRz1Rz2; Rz1 and Rz2 represent a substituent; m represents 1 or 2; n represents 1 or 2; m + n is 3; and furthermore, the structures of the three ligands coordinated to Ir are not all the same.)