ORGANOMETALLIC COMPLEX, LIGHT-EMITTING ELEMENT, LIGHT-EMITTING DEVICE, ELECTRONIC DEVICE, AND LIGHTING DEVICE

摘要

PROBLEM TO BE SOLVED: To provide an organometallic complex with high emission efficiency, as a novel substance having a novel skeleton.SOLUTION: The organometallic complex includes a metal and a ligand. The metal is iridium or platinum. The ligand includes a 5H-pyrimido[5,4-b]indole skeleton and an aryl group bonded to the 4-position of the 5H-pyrimido[5,4-b]indole skeleton. The 3-position of the 5H-pyrimido[5,4-b]indole skeleton and the aryl group are respectively bonded to the metal. In the formula, M represents iridium or platinum, and Rto Rindependently represent H, a substituted or unsubstituted alkyl group, or a substituted or unsubstituted aryl group.SELECTED DRAWING: None