Light-Emitting Element Material, Light-Emitting Element, Electronic Device, and Lighting Device

摘要

A light-emitting element material including an ionic iridium complex in which a 4,4′-bipyrimidine structure is coordinated to iridium is provided. Alternatively, a light-emitting element material including an ionic iridium complex represented by the following structural formula (1) is provided. In addition, a light-emitting element including the light-emitting element material is provided.