Used as a phosphorescent emitter in organic light-emitting diodes (OLEDs), particularly in display and lighting technologies. Its strong spin-orbit coupling enables efficient triplet harvesting, resulting in high electroluminescence efficiency. Commonly employed in red or near-infrared emitting layers due to its tunable emission properties. Also investigated in photocatalytic reactions and as a sensitizer in photoredox catalysis owing to its long-lived excited states and stability under irradiation. Suitable for use in solid-state devices and solution-processed films.