OFET

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An Organic Field-Effect Transistor (OFET) is a field effect transistor using an organic semiconductor in its channel. OFETs can be prepared either by vacuum evaporation of small molecules, or by solution-casting of polymers or small molecules. These devices have been developed to realize low-cost, large-area electronic products. OFETs have been fabricated with various device geometries. The most commonly used device geometry is bottom gate with top drain- and source electrodes, because this geometry is similar to the thin-film silicon transistor (TFT) using thermally grown Si/SiO₂ oxide as gate dielectric. Organic polymers, such as poly(methyl-methacrylate) (PMMA), can be used as dielectric, too.

In May 2007, Sony Corp. reported the first full-color, video-rate, flexible, all plastic display [1], in which both, the thin film transistors as well as the light emitting pixels were made of organic materials.