IR-sintering of ink-jet printed metal-nanoparticles on paper

D. Tobjörk (Corresponding Author), H. Aarnio, P. Pulkkinen, R. Bollström, A. Määttänen, P. Ihalainen, Tapio Mäkelä, J. Peltonen, M. Toivakka, H. Tenhu

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114 Citations (Scopus)

Abstract

Sintering of printed metal nanoparticles can be made not only by conventional heating, but also by, e.g., electrical, microwave, plasma, laser and flash lamp annealing. We demonstrate sintering by using low-cost incandescent lamps as an effective way of obtaining highly conductive contacts of two types of ink-jet printed metal-nanoparticle inks on paper; both alkanethiol protected gold nanoparticles and a commercially available silver nanoparticle ink. This low-cost roll-to-roll compatible sintering process is especially suitable on paper substrates because of the high diffuse reflectance, relatively high thermal stability and low thermal conductivity of paper. A volume resistivity of around 10 μΩ cm was achieved of the inkjetted silver nanoparticles within 15 s of exposure to an IR lamp, which corresponds to a conductivity of 10–20% of that of bulk silver. Too long exposure time and too high intensity, however, lead to darkening of the paper fibers. Both the crack formation and the coffee ring effect of the inkjet printed gold nanoparticles were, furthermore, found to be reduced on paper as compared to glass or plastic substrates.
Original languageEnglish
Pages (from-to)2949-2955
Number of pages7
JournalThin Solid Films
Volume520
Issue number7
DOIs
Publication statusPublished - 2012
MoE publication typeA1 Journal article-refereed

Keywords

  • printed electronics
  • nanoparticle sintering
  • photothermal sintering
  • paper substrate
  • ink-jet printing
  • resistivity

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    Tobjörk, D., Aarnio, H., Pulkkinen, P., Bollström, R., Määttänen, A., Ihalainen, P., Mäkelä, T., Peltonen, J., Toivakka, M., & Tenhu, H. (2012). IR-sintering of ink-jet printed metal-nanoparticles on paper. Thin Solid Films, 520(7), 2949-2955. https://doi.org/10.1016/j.tsf.2011.10.017