FETs Based on Polythiophenes

Liquid phase processable materials are important in order to fabricate devices using low-cost processes such as spin-coating, casting, or printing. Three methods have been used to fabricate polymer TFT devices from the liquid phase. In the first method, a semiconducting polymer layer is formed directly on the electrodes by electrochemical polymerization, and these electrodes are used subsequently as chain and source electrodes [5, 77-79]. The first polythiophene TFT was fabri- 

9 Oligo- and Poly thiophene Field Effect Transistors Oligo- and poly thiophene field effect 

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