Used as an electron-accepting core in organic semiconductor materials, particularly in the development of non-fullerene acceptors for organic photovoltaics (OPVs). Its rigid, planar structure enhances π-π stacking and charge transport, improving device efficiency. Commonly incorporated into small molecule or polymer-based solar cells to achieve broad light absorption and favorable energy level alignment with donor materials. Also explored in organic field-effect transistors (OFETs) due to its stability and electron-deficient character.