Conductive screen printing inks by gelation of graphene dispersions

K.A. Arapov, E. Rubingh, R.J. Abbel, J. Laven, G. de With, H.B. Friedrich

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137 Citations (Scopus)
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This paper describes the gelation of highly concentrated graphene/polymer dispersions triggered by mild heating. The gel formation is only dependent on the concentration of graphene with 3.25 mg mL−1 as the minimum value for graphene network formation. The graphene gel is then utilized for the preparation of colloidally stable and highly concentrated (52 mg mL−1) graphene pastes that demonstrate excellent performance in screen printing down to lines of 40 μm in width. Printed patterns dried at 100 °C for only 5 min exhibit sheet resistances of 30 Ω −1 at 25 μm thickness, thus, removing the need for long-time high temperature annealing, doping, or other treatments. Such a low drying temperature, high printing definition, and compatibility with industrially relevant plastic and paper substrates brings high-volume roll-to-roll application in printed flexible electronics within reach.
Original languageEnglish
Pages (from-to)586-593
JournalAdvanced Functional Materials
Issue number4
Publication statusPublished - 26 Jan 2016


  • Gelation
  • Graphene
  • Ink
  • screen printing


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