Organic field-effect transistors and all-polymer integrated circuits

Electrical properties of field-effect transistors made of different solutio n processable organic semiconductors are described. The temperature and gat e-voltage dependence of the mobility is shown and theoretically described u sing a model based on the variable-range hopping of charge carriers in an e xponential density of states. Furthermore, a technology has been developed to make all-polymer integrated circuits. It involves reproducible fabricati on of field-effect transistors on flexible substrates, where the semiconduc ting, conducting and insulating parts are all made of polymers. Integrated circuits consisting of more than 300 field-effect transistors are demonstra ted. (C) 1999 Elsevier Science B.V. All rights reserved.