Ink jet printing of conductive silver tracks from nanoparticle inks on mesoporous substrates
2011 (English)In: Digital fabrication 2011, NIP27 27th international conference on digital printing technologies: technical program and proceedings, October 2-6, 2011, Minneapolis, Minnesota, 2011, -440 p.Conference paper (Refereed)
Conductive tracks are produced by ink jet printing of a commercial silver nanoparticle ink on different substrates. We observed that applying mesoporous coatings on the substrates resulted in metallic conductivity immediately after printing. The influence of the average pore size and some chemical parameters of the coatings were studied, as well as the thermal treatment after printing. We found that using substrates with slightly acidic cationic coating and small pore sizes of about 15 nm resulted in the highest conductivity for the given ink even without any thermal treatment applied. Another crucial parameter found was the smoothness of the surface, which was estimated by the surface gloss. After drying / "sintering" of the printed tracks for 9 min at 100°C in an oven a specific resistance of 13 μΩ·cm (about eightfold that of bulk silver) could be achieved using a commercially available substrate. This is a significant higher value than recently reported conductivities obtained after heating to much higher temperatures. Additionally, some chemical post treatment of the prints by aqueous solutions can be applied for a further increase in conductivity. Furthermore, samples produced were exposed to "photonic sintering" equipment to assess the potential of this technique for inline post-processing of metallic structures on porous substrates.
Place, publisher, year, edition, pages
2011. -440 p.
Chemical parameters, Crucial parameters, Different substrates, Higher temperatures, In-line, Mesoporous, Metallic conductivity, Metallic structures, Porous substrates, Post processing, Post treatment, Silver nanoparticles, Specific resistances, Surface gloss
Other Engineering and Technologies
IdentifiersURN: urn:nbn:se:kth:diva-159656ScopusID: 2-s2.0-84860752622ISBN: 978-089208296-4OAI: oai:DiVA.org:kth-159656DiVA: diva2:786647
27th International Conference on Digital Printing Technologies, NIP27 and 7th International Conference on Digital Fabrication 2011, Minneapolis, MN, United States, 2 October 2011 through 6 October 2011
QC 201502202015-02-062015-02-062015-02-20Bibliographically approved