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Ring Edge in Film Morphology: Benefit or Obstacle for Ink-Jet Fabrication of Organic TFTs

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To be a high performance device, the ink-jet printing of organic layer faces to the challenge of ring edge behavior which makes the uneven film and deteriorate device, due to the capillary force driving from center toward to edge. Another difficulty is the narrowing of channel width by ink-jet printing of organic layer meets the tough to be under micrometer scale. The limitation comes from state-of-the art of ink-jet printing because of its large drop size and jetting variation. In this study, a novel process by inkjet printing of dilute PMMA solution to form separation bank as confined boundary for the subsequent depositing PEDOT was proposed, where the PEDOT was as the source and drain electrode with gap of several micrometers due to the innate characteristic of ring edge of ink jetted PMMA. Using this technique, the organic device constructed with bottom gate and evaporation of Pentance shown satisfactory performance.

Document Type: Research Article

Publication date: 2006-01-01

More about this publication?
  • 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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