Used primarily as a hole-transporting material in organic light-emitting diodes (OLEDs). It helps improve device efficiency by facilitating the movement of positive charges from the anode to the emissive layer. Commonly found in blue OLEDs due to its high triplet energy and good thermal stability. Also employed in perovskite solar cells for its effective hole extraction properties, contributing to higher power conversion efficiency. Its rigid molecular structure enhances morphological stability, making it suitable for long-lasting optoelectronic devices.