The performance of organic field-effect transistors, OFETs, restricts their potential use to applications where low efficiency and short lifetimes are acceptable, although recently the field has evolved rapidly.([1,2]) Proposed applications are radio-frequency information tags, e.g., price tags and inventory labels, sensors, and simple displays.([3-6]) A simple, low-cost manufacturing process is desired, however such processes usually result in significantly lower device performance. The manufacture of state-of-the-art OFETs today([7]) normally requires the device to be processed in an inert atmosphere and to be shielded from oxygen and humidity in the air.([8]) The best organic transistors have almost reached the performance levels of amorphous silicon devices and the technology is entering the commercial stage.([9-13])