Used as a host material in blue phosphorescent organic light-emitting diodes (PHOLEDs). It exhibits high triplet energy, making it suitable for efficient energy transfer to blue emitters. Commonly employed in the emissive layer of OLED devices to improve device efficiency and stability. Also used in multilayer OLED structures due to its good film-forming properties and thermal stability. Its electron-transport characteristics help balance charge injection, enhancing overall device performance.