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 luminescent probe in biological imaging owing to its long emission lifetime and photostability. Suitable for use in vapor-deposited or solution-processed thin films for advanced optoelectronic devices.