Flexible Organic Circuits with Printed Gate Electrodes


  • U. Zschieschang thanks Prof. Gerhard Roewer (Freiberg University of Mining and Technology) for supporting this work and for stimulating discussions.


Pentacene transistors and integrated circuits on flexible substrates (see Figure) have been fabricated with gate electrodes prepared using a purely additive process combining microcontact printing and selective electroless plating. The printed metal patterns have a resolution of better than 5 μm. Transistors have a carrier mobility of 0.06 cm2 V–1 s–1 and an on/off current ratio of 106. Ring oscillators have a signal propagation delay of 170 μs per stage.