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Issue 11, 2018
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Self-catalyzed copper–silver complex inks for low-cost fabrication of highly oxidation-resistant and conductive copper–silver hybrid tracks at a low temperature below 100 °C

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Abstract

Cu–Ag complex inks are developed for printing conductive tracks of low cost, high stability, and high conductivity on heat-sensitive substrates such as polyethylene terephthalate (PET) substrates. The inks show an obvious self-catalyzed characteristic due to the in situ formation of fresh metal nanoparticles which promote rapid decomposition and sintering of the inks at a low temperature below 100 °C. The temperature is 40–60 °C lower than those of general Cu complex inks and 100–120 °C lower than those of general Cu/Ag particle inks. Highly conductive Cu–Ag tracks of 2.80 × 10−5 Ω cm and 6.40 × 10−5 Ω cm have been easily realized at 100 °C and 80 °C, respectively. In addition, the printed Cu-based tracks not only show high oxidation resistance at high temperatures of up to 140 °C (the maximum tolerable temperature of current PET substrate) but also show excellent stability at high humidity of 85% because of the very uniform Cu–Ag hybrid structure. The printable tracks exhibit great potential application in various wearable devices fabricated on textiles, papers, and other heat-sensitive substrates.

Graphical abstract: Self-catalyzed copper–silver complex inks for low-cost fabrication of highly oxidation-resistant and conductive copper–silver hybrid tracks at a low temperature below 100 °C

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Publication details

The article was received on 12 Dec 2017, accepted on 08 Feb 2018 and first published on 08 Feb 2018


Article type: Paper
DOI: 10.1039/C7NR09225C
Citation: Nanoscale, 2018,10, 5254-5263
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    Self-catalyzed copper–silver complex inks for low-cost fabrication of highly oxidation-resistant and conductive copper–silver hybrid tracks at a low temperature below 100 °C

    W. Li, C. Li, F. Lang, J. Jiu, M. Ueshima, H. Wang, Z. Liu and K. Suganuma, Nanoscale, 2018, 10, 5254
    DOI: 10.1039/C7NR09225C

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