Used as a key intermediate in organic semiconductor materials, particularly in the development of blue-emitting layers for OLED (organic light-emitting diode) devices. Its rigid carbazole backbone and bromine functional group enhance thermal stability and allow for further cross-coupling reactions, making it valuable in synthesizing host materials for phosphorescent OLEDs. Also employed in the preparation of hole-transport materials and as a building block in perovskite solar cells due to its favorable electronic properties and film-forming ability.