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Solution-based hybrid printing process for tiny channel length of organic transistors

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Inkjet printing technique has been studying intensively on organic electronics, but its resolution is limited to about 20 to 50 μm due to the nozzle size and the interaction between the ink and substrates. In order to reduce the patterning feature of IJP, we use the contact printing as an auxiliary process to pre-define the desired deposition pattern. By use of the wetting and the dewetting surface properties, the inkjet printed ink will self-align to the wetting surface to afford tiny feature. In this paper, Poly[3,4-(ethylenedioxy)thiophene] (PEDOT) was selected and patterned as electrodes of organic transistors. Octadecyltrichlorosilane (OTS) thin layer was used as the surface modifier. The minimum channel length can achieve to about 5 μm or so. The field-effect mobility of 0.001 cm2/V-s and on/off current ratios of 103 were obtained in the ploy(3-hexylthiophene) organic thin film transistors fabricated by this proposed process.
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Document Type: Research Article

Publication date: 2008-01-01

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  • For more than 30 years, IS&T's series of digital printing conferences have been the leading forum for discussion of advances and new directions in 2D and 3D printing technologies. A comprehensive, industry-wide conference that brings together industry and academia, this meeting includes all aspects of the hardware, materials, software, images, and applications associated with digital printing systems?particularly those involved with additive manufacturing and fabrication?including bio-printing, printed electronics, page-wide, drop-on-demand, desktop and continuous ink jet, toner-based systems, and production digital printing, as well as the engineering capability, optimization, and science involved in these fields. In 2016, the conference changed its name formally to Printing for Fabrication to better reflect the content of the meeting and the evolving technology of printing.

    Please note: For purposes of its Digital Library content, IS&T defines Open Access as papers that will be downloadable in their entirety for free in perpetuity. Copyright restrictions on papers vary; see individual paper for details.

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