Used as a phosphorescent emitter in organic light-emitting diodes (OLEDs), particularly in display and lighting technologies. Its strong spin-orbit coupling enables efficient conversion of electrical energy into light, resulting in high device efficiency. Commonly employed in red or near-infrared emitting layers due to its emission profile. Exhibits good thermal stability and film-forming properties when deposited via vacuum thermal evaporation. Also investigated in tandem OLEDs and for use in flexible and transparent displays.