Used primarily in organic light-emitting diodes (OLEDs) as a hole-transporting material due to its high thermal stability and excellent film-forming properties. Its rigid molecular structure enhances device efficiency by improving charge carrier mobility. Commonly employed in blue-emitting OLEDs where it helps confine excitons within the emissive layer, boosting luminescence and device longevity. Also utilized as a building block in host materials for phosphorescent OLEDs, supporting balanced electron and hole injection. Its application extends to perovskite solar cells and organic photovoltaics as an interfacial layer to improve open-circuit voltage and overall performance.