Used as a hole-transporting material in organic light-emitting diodes (OLEDs) due to its high triplet energy and excellent thermal stability. Its branched molecular structure enhances amorphous film formation, improving device efficiency and longevity. Commonly employed in blue phosphorescent OLEDs to prevent exciton quenching and support balanced charge transport. Also applied in perovskite solar cells as a stable hole-transport layer, contributing to higher power conversion efficiency and reduced hysteresis.