申请人:Sumitomo Chemical Company, Limited
公开号:US20170040542A1
公开(公告)日:2017-02-09
A composition is provided containing: a phosphorescent compound having an emission spectrum whose maximum peak wavelength is between 380 nm or more and less than 495 nm, having no dendron and represented by formula (1′); two or more phosphorescent compounds having an emission spectrum whose maximum peak wavelength is between 495 nm or more and less than 750 nm and having a dendron; and a compound represented by formula (H-1).
In formula (1′) M represents an iridium atom or the like, n
1
represents an integer of 1 or more, n
2
represents an integer of 0 or more, E
1
and E
2
represent a carbon atom or the like, the ring R
1′
represents a diazole ring, the ring R
2
represents a 6-membered aromatic hydrocarbon ring or the like, and A
1
-G
1
-A
2
represents an anionic bidentate ligand.