Printability of functional inks on multilayer curtain coated paper

Roger Bollström, Daniel Tobjörk, Peter Dolietis, Pekka Salminen, Janet Preston, Ronald Österbacka, Martti Toivakka

    Research output: Contribution to journalArticleScientificpeer-review

    26 Citations (Scopus)

    Abstract

    Printability of functional inks on multilayer curtain coated substrates was investigated. The inks represent those commonly used to produce solution processable electronic devices, such as organic transistors. The substrate, which combines sufficient barrier and printability properties for printed functional devices, was manufactured utilizing high speed curtain coating technique. The coating structure consists of a mineral pigment layer coated on top of a barrier layer. The combination of the two layers allows for controlling the absorption of ink solvents. By adjusting the thickness, porosity and surfaCe energy of the top-coating the printability can be tuned for various functional inks. Focus was set on printing conducting silver and carbon inks, both with nano- and micrometer sized particles, as well as printing of an organic semiconductor, poly(3-hexylthiophene). The pore volume in the top-coating determined the spreading of the micrometer sized silver ink as well as the amount semiconductor per area required, whereas the pore size was the determining factor regarding penetration of the nano-sized silver ink. As a proof of concept hygroscopic insulator field effect transistors were printed on the multi-layer curtain coated paper using a custom-built roll to roll hybrid printer. (C) 2012 Elsevier B.V. All rights reserved.
    Original languageUndefined/Unknown
    Pages (from-to)13–20
    Number of pages8
    JournalChemical Engineering and Processing
    Volume68
    DOIs
    Publication statusPublished - 2013
    MoE publication typeA1 Journal article-refereed

    Keywords

    • Curtain coating
    • Functional ink
    • Paper
    • Pore volume
    • Printing
    • Transistor Paper electronics

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