Used in organic electronics, particularly in the development of organic light-emitting diodes (OLEDs), due to its excellent hole-transport properties and thermal stability. Its rigid fused-ring structure enhances luminescence efficiency and device durability. Commonly employed as a building block in host materials for blue phosphorescent OLEDs, where it helps improve energy transfer and reduce efficiency roll-off. Also explored in perovskite solar cells as a dopant-free hole-transport material, contributing to improved device performance and stability under operational conditions.