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Many applications that rely on organic electronic circuits still suffer from the limited switching speed of their basic elements – the organic thin film transistor (OTFT). For a given set of materials the OTFT speed scales inversely with the square of the channel length, the parasitic gate overlap capacitance, and the contact resistance. For maximising speed we pattern transistor channels with lengths...
Sub-micrometer channel length (0.5μm) organic thin-film transistors (OTFTs) are demonstrated using a process flow combining nano-imprint lithography (NIL) and self-alignment (SA). A dedicated test structure was designed and samples were fabricated on 4-in. plastic foils using a p-type sublimated small molecule (pentacene) as semiconductor. Field-effect mobilities, in saturation, between 0.1 and 1cm...
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