Used primarily as a hole-transport material in organic light-emitting diodes (OLEDs) and perovskite solar cells due to its excellent thermal stability and favorable energy levels for efficient charge transport. Its brominated aromatic structure enhances film-forming properties and improves device performance by reducing aggregation and increasing morphological stability. Also employed in multilayer organic electronic devices where high hole mobility and compatibility with adjacent layers are critical. Shows promise in photovoltaic applications as a dopant-free hole-transport layer, contributing to longer device lifetimes and improved efficiency under ambient conditions.