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Inkjet Printing of Non-Volatile Rewritable Memory Arrays

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Inkjet printing of all-polymer non-volatile rewritable memories was demonstrated. A polymeric ferroelectric material sandwiched between two electrically conductive layers formed the memory cell. Inkjet printing of the electrodes was performed with PEDOT-PSS and the active layer was printed with a ferroelectric polymer. Both fluids were modified for high quality jetability in Xaar's XJ126 binary printheads. The test device contained memory arrays of up to 100 bit with a design rule of 200μm wide electrode lines and 1mm line spacing. A pinhole-free ferroelectric layer of 120nm thickness allowed switching of the memory devices at voltages below 20V within 1ms. Large signal-to-noise ratios were recorded even after 105 read-write cycles. Target areas for this technology are low-density memories on flexible plastic substrates or on special papers. Application areas are tag memories, anti-counterfeiting and smart packaging.

Document Type: Research Article

Publication date: 2006-01-01

More about this publication?
  • For more than 25 years, NIP has been the leading forum for discussion of advances and new directions in non-impact and digital printing technologies. A comprehensive, industry-wide conference, this meeting includes all aspects of the hardware, materials, software, images, and applications associated with digital printing systems, including drop-on-demand ink jet, wide format ink jet, desktop and continuous ink jet, toner-based electrophotographic printers, production digital printing systems, and thermal printing systems, as well as the engineering capability, optimization, and science involved in these fields.

    Since 2005, NIP has been held in conjunction with the Digital Fabrication Conference.

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