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Inkjet Printing Short-Channel Polymer Transistors with High-Performance and Ultrahigh Photoresponsivity

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Inkjet-printed short-channel polymer transistors exhibit a high performance (μavg = 1.20 cm2 V−1 s−1). With a 50 μm orifice nozzle, polymer transistors with a sub-micrometer (700 nm) channel length are mass-fabricated with good uniformity and reproducibility. In addition, owing to the device geometry, an ultrahigh photoresponsivity up to 106 A W−1 is achieved, which realizes economical, lithography-free photodetectors.

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