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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

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) substrate. 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 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 to various wearable devices on textiles, papers, and other heat-sensitive substrates.

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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, Accepted Manuscript
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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, Accepted Manuscript , DOI: 10.1039/C7NR09225C

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