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-to-singlet emission, resulting in high electroluminescence efficiency. Commonly employed in red or near-infrared OLED devices due to its tunable emission properties. Also investigated in photocatalytic reactions and as a sensitizer in dye-sensitized solar cells for improved electron transfer. Stable under operational conditions, making it suitable for long-life optoelectronic applications.