Used as a hole-transporting material in organic light-emitting diodes (OLEDs). It helps improve device efficiency by facilitating the movement of positive charges. Commonly found in blue phosphorescent OLEDs due to its high triplet energy and thermal stability. Also employed in perovskite solar cells for effective hole extraction, enhancing overall power conversion efficiency. Its amorphous nature supports uniform thin-film formation, beneficial for large-area and flexible optoelectronic devices.