Journal
IEEE TRANSACTIONS ON ELECTRON DEVICES
Volume 53, Issue 4, Pages 594-600Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TED.2006.870885
Keywords
inkjet; monolayer; oligothiophene; organic thin-film transistor (OTFT)
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Crystalline monolayer films of a novel organic semiconducting material were deposited as the active layer for organic thin-film transistors (OTFTs) via inkjet printing. Devices exhibited field-effect mobilities up to 0.07 cm(2)/V (.) s and on/off ratios > 10(8), surpassing values measured for devices cast with thicker films of the same material. The printed monolayer devices exhibited superior subthreshold characteristics with less hysteresis, and defect and trap densities are improved over thicker film analogs. These results show that solution deposition techniques such as inkjet printing can result in the monolayer crystalline thin films that are requisite for near-ideal electrostatics in OTFTs.
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