organic FET (OFET)
Organic field-effect transistors (OFETs) have the same electrodes with the same designations as inorganic silicon-based field-effect transistors(FETs), namely the source, which generates the charge carriers, the drain as the collecting electrode and the gate as the control electrode.
Unlike conventional FETs, the current flow conducting channel between the source and drain is made of organic semiconductors. The substrate often consists of oxidized silicon. In addition to these OFETs, there are already those in which the substrate is also made of organic material. The performance of OFETs has developed rapidly in recent years, and in the meantime they are comparable in performance to amorphous silicon-based thin-film transistors, which is ultimately due to their significantly improved conductivity. This has increased since the 1990s for polycrystalline OFETs from about `10^-4` S/cm to `10^1` S/cm.
OFET technology can be produced inexpensively in printed electronics and is extremely flexible, depending on the substrate. It is used, among other things, as an organic thin film transistor in OTFT displays.