Organic electronics on paper

We have fabricated organic thin-film transistors and ring oscillators on paper and on flexible polyetherether ketone film using small-molecule hydrocarbon pentacene as the semiconductor and solution-processed polyvinylphenol as the gate dielectric. Transistors on paper have a carrier mobility of 0.2 cm(2)/V s and an on/off current ratio of 10(6), similar to devices on polyetherether ketone. A signal propagation delay of 22 mus per stage was measured for pentacene ring oscillators on polyetherether ketone film, and a signal delay of 12 ms was obtained for ring oscillators on paper. (C) 2004 American Institute of Physics.