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All-Solution-Processed Selective Assembly of Flexible Organic Field-Effect Transistor Arrays

We have developed an all-solution fabrication process for plastic electronic devices, in which all components of devices spontaneously assemble with the desired geometry. The entire process can be carried out under ambient atmosphere. By forming surface molecular templates, complete active matrix arrays of organic field-effect transistors, including gate, source and drain electrodes, and organic semiconductor layers, have been patterned from solution with excellent operational characteristics and uniformity on a plastic substrate. This bottom-up method of device fabrication, in which the functional properties of molecules are utilized for their spontaneous assembly, may become a core technology for plastic electronics.