All-polymer field effect transistors

Polymer field effect transistors (PFETs) were made from polymeric semiconductors, insulators and electrodes on flexible polymeric substrates. The authors present recent results of all-polymer FETs with conjugated polymers like poly(3-alkylthiophenes) as active semiconducting material. Highly resolved electrodes were patterned by lithography of conducting polymers. The on/off ratios exceed 1000 by far. The logic capability of the PFETs could be demonstrated by the realisation of inverters.