Abstract
Thin-film organic field-effect transistors have emerged as a promising technology for flexible and low-cost electronic devices. This review examines recent advances in the development of OFTs based on various organic and nanocomposite materials, including carbon nanotubes, epoxy blends, graphene oxide, chitosan succinamide, polyarylenephthalide, fullerene derivatives, and poly(3-hexylthiophene-2, 5-diyl). The electrical properties, charge carrier mobility, and surface morphology of these materials are analyzed, highlighting their potential applications in sensors, flexible electronics, and biomedical devices. The review also discusses challenges and future directions in this field, emphasizing the need for improved fabrication methods and material optimization to enhance device performance and scalability.