| abstract |
A composition comprising: a phosphorescent compound represented by the formula (1′) having a maximum peak wavelength of an emission spectrum of 380 nm or more and less than 495 nm and having no dendron, and a maximum peak wavelength of an emission spectrum of 495 nm or more and less than 750nm and having two or more kinds of phosphorescent compounds and specific compounds having dendrons, in formula (1′), M represents an iridium atom, etc., n 1 represents an integer of 1 or more, n 2 represents 0 or more Integer, E 1 and E 2 represent carbon atoms, etc., ring R 1' represents a diazole ring, ring R 2 represents a 6-membered aromatic hydrocarbon ring, etc., A 1 ‑G 1 ‑A 2 represents an anionic bidentate ligand . |