Used as a key intermediate in organic semiconductor materials, particularly in the development of n-type and ambipolar organic field-effect transistors (OFETs). Its strong electron-deficient character enhances electron transport properties in thin-film electronics. Also employed in the synthesis of conjugated polymers and small molecules for organic photovoltaics (OPVs), where it contributes to broad light absorption and improved charge separation efficiency. Due to the selenium incorporation, it promotes intermolecular interactions and enhances charge carrier mobility. Additionally explored in near-infrared (NIR) dyes and sensors owing to its extended π-conjugation and high electron affinity.