发明公开

LIGHT-EMITTING ELEMENT
摘要:
Provided is a light emitting device excellent in luminance life.
A light emitting device comprising an anode, a cathode, a first organic layer disposed between the anode and the cathode and comprising a phosphorescent material, and a second organic layer disposed between the anode and the cathode and comprising a crosslinked body of a crosslinkable material and a phosphorescent material,
wherein the phosphorescent material contained in the first organic layer and the phosphorescent material contained in the second organic layer comprise the same phosphorescent compound represented by the formula (1), and the crosslinkable material is a compound represented by the formula (3):

wherein 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 L 1 and the ring L 2 represent an aromatic heterocyclic ring or the like, and A 1 -G 1 -A 2 represents an anionic bidentate ligand:

wherein m B1 to m B3 represent an integer of 0 or more, Ar 7 represents an aromatic hydrocarbon group or the like, L B1 represents a divalent group or the like, and X" represents a crosslinkable group or the like.
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