Used as a phosphorescent emitter in organic light-emitting diodes (OLEDs), particularly in red and near-infrared regions. Its strong spin-orbit coupling due to the iridium center enables efficient triplet harvesting, making it highly efficient in electroluminescent devices. Commonly employed in display technologies and solid-state lighting where high color purity and stability are required. Also investigated in sensing and bioimaging applications due to its long emission lifetime and tunable luminescence properties.