Novel approaches for low temperature sintering of inkjet-printed inorganic nanoparticles for roll-to-roll (R2R) applicat
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Novel approaches for low temperature sintering of inkjet-printed inorganic nanoparticles for roll-to-roll (R2R) applications Jolke Perelaera) and Ulrich S. Schubertb) Laboratory of Organic and Macromolecular Chemistry, Friedrich-Schiller-University Jena, D-07743 Jena, Germany; Jena Center for Soft Matter, Friedrich-Schiller-University Jena, D-07743 Jena, Germany; and Dutch Polymer Institute (DPI), 5600 MB Eindhoven, Netherlands (Received 26 June 2012; accepted 3 December 2012)
Within the last decade, inkjet printing technology has developed from only a text and graphic industry to a major topic of scientific research and development. Inkjet printing can be used as a highly reproducible noncontact patterning technique to print at high speeds either small or large areas with high quality features; it requires only small amounts of functional materials, which immediately lower production costs. Furthermore, inkjet printing reduces the amount of processing steps due to its additive technique of materials deposition, which further decreases productions costs. This contribution provides a literature survey covering the latest results in low temperature sintering inkjet-printed metal precursor materials in a fast and efficient manner, aiming for roll-to-roll processing. The prepared features can be used as interconnects and contacts for microelectronic applications, including organic light-emitting diodes, organic photovoltaics, and radio frequency identification tags.
I. INTRODUCTION
The market for printed and potentially printed electronics is predicted to be $9.4 billion in 2012,1 where 42.5% will be organic electronics—such as organic light-emitting diode (OLED) display modules. Of the total market in 2012, 30% is said to be printed. Initially, photovoltaics, OLED, and e-paper displays will grow rapidly, followed by thinfilm transistor circuits, sensors, and batteries. By 2022, the market is expected to be $63.28 billion, with 45% printed and 33% on flexible substrates. All applications for printed electronics require electric wiring to transport electrons to (or from) the microelectronic device. Inkjet printing of metal precursor inks has been accepted for the fabrication of microelectronics applications, including conducting wiring for circuitry and radio frequency identification (RFID) tags,2 organic thin-film transistors,3 and sensor arrays,4 as it can enable roll-to-roll (R2R) production in the near future.5 Inkjet printing is an attractive alternative patterning method since it is an additive, noncontact, mask-free, and digital deposition technique, which requires less processing steps and less material,6 and produces a minimal amount of waste.7 Address all correspondence to these authors. a) e-mail: [email protected] b) e-mail: [email protected] This paper has been selected as an Invited Feature Paper. DOI: 10.1557/jmr.2012.419 564
J. Mater. Res., Vol. 28, No. 4, Feb 28, 2013
http://journals.cambridge.org
Downloaded: 27 May 2014
Conductive precursor materials typically consist of metallic nan
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