Organic thin film transistors (OTFTs) promise high carrier mobilities comparable to or higher than amorphous silicon TFTs and may be readily integrated on plastics for flexible electronic applications.  By introducing solution-processable organic materials, low-cost and large-area electronics are achieved by spin-coating, dipping or printing technologies. However, effectively patterning solution-processable organic materials is still a challenge, important for integrated organic electronic circuitry. Nanoimprint lithography has been widely used for nano-scale pattern formation and could be an ideal alternative for patterning organic materials. We report OTFTs fabricated by patterning the active semiconductor channel materials by nanoimprinting. We print the n-sulfinylacetamidopentacene precursor to pentacene and [1]Benzothieno[3,2- ]benzothiophene (BTBT) derivatives to form patterned organic semiconductor TFTs. With the aid of high quality dielectric layers and interface engineering, we achieve low-voltage and air-stable operation on flexible substrates.

Patterning solution-processable organic thin film transistors by nanoimprint lithography for low-voltage and air-stable operation on flexible substrates

244th National Meeting (2012)

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