Used as an intermediate in the synthesis of organic semiconductors and optoelectronic materials. Its bromo and chloro functional groups allow for selective cross-coupling reactions, making it valuable in constructing conjugated polymers and small molecules for applications in organic light-emitting diodes (OLEDs) and organic photovoltaics (OPVs). Also employed in the development of hole-transport materials due to the inherent stability and electronic properties of the carbazole core. Its derivatization supports the tuning of HOMO energy levels, enhancing device efficiency and charge transport in thin-film transistors.