Organic thin-film transistors for flexible displays and circuits

Unlike thin-film transistors (TFTs) based on hydrogenated amorphous silicon, polycrystalline silicon or metal oxides, which typically require process temperatures above 150 °C, organic TFTs can often be fabricated at temperatures around 100 °C or below and thus not only on glass or certain high-temperature-compatible types of plastics, such as polyimide or polyethersulfone, but also on less expensive plastics, such as polyethylene naphthalate (PEN) and polyethylene terephthalate (PET), and even on paper, making organic TFTs potentially useful for flexible active-matrix displays, flexible sensor arrays, and flexible integrated circuits.