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Evaporative Deposition of Molecular Organics in Ambient with a Molecular Jet Printer

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We present the concept and the application of the molecular jet (MoJet) printing technique. Using this technique, we demonstrate patterned molecular organic semiconducting thin films directly printed by local evaporative deposition. Three stages are involved in the printing process. In the first stage, HP thermal InkJet printing technology is used to deliver ink drops to a micromachined silicon membrane consisting of an array of micrometersize pores and an integrated heater. Once the ink is filled inside the pores, in the second stage a small current is passed through the heater to completely drive off solvent from the micro-pores. In the final stage, pulsed current of larger magnitude is applied to heat up the pores to a temperature sufficient to discharge the dry ink materials out of the pores and form molecular flux. The flux is then deposited onto a nearby substrate to form designated thin film patterns.

The MoJet printing technique can be applied to pattern solution-processable molecular organic thin films, providing fluxon-demand in an ambient environment.
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Document Type: Research Article

Publication date: 2006-01-01

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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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