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 and brightness. Commonly employed in red or near-infrared emitting layers due to its emission profile. Also investigated in photocatalytic reactions and as a sensitizer in energy transfer processes owing to its long-lived excited states and photochemical stability.