Used as an intermediate in organic semiconductor materials, particularly in the development of hole-transport materials for OLED (organic light-emitting diode) devices. Its rigid, conjugated structure enhances thermal stability and charge carrier mobility, making it suitable for use in blue-emitting OLEDs. Also employed in perovskite solar cells as a component of dopant-free hole-transport layers, improving device efficiency and stability. Additionally, serves as a building block in the synthesis of advanced carbazole-based polymers and small molecules for optoelectronic applications.