| abstract |
A light emitting device having an anode, a cathode, a first organic layer and a second organic layer, wherein the first organic layer is a layer containing a metal complex represented by the formula (1), and the second organic layer is a layer containing a metal complex represented by the formula (2) and the like:n n[M 1 represents an iridium atom and the like; n 1 represents an integer of 1 or more; n 2 represents an integer of 0 or more; Ring R 1A represents a triazole ring and the like; Ring R 2 represents an aromatic hydrocarbon ring and the like; E 1 , E 2 and E 11A to E 13A represent a nitrogen atom or a carbon atom; R 11A to R 13A represent a substituent and the like; A 1 -G 1 -A 2 represents a bidentate ligand. At least one of E 11A to E 13A is a nitrogen atom, and at least one of R 11A to R 13A bonding to the nitrogen atom is a group represented by the formula (Ar-1A).]n n[Ring A represents an aromatic hydrocarbon ring and the like; R 2 represents a substituent and the like.]n n[M 2 represents an iridium atom and the like; n 3 represents an integer of 1 or more; n 4 represents an integer of 0 or more; E L represents a carbon atom and the like; Ring L 1 represents a 6-membered aromatic hetero ring; Ring L 2 represents an aromatic hydrocarbon ring and the like; A 3 -G 2- A 4 represents a bidentate ligand.]. |