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Development of Silver Nanoparticle Ink for Printed Electronics
Keywords: Silver Nanoparticles, Inkjet Printing, Conductivity
Printed/flexible electronics has attracted extensive research interest, because printing technologies such as non-contact and drop-on-demand inkjet printing promise dramatic reduction of fabrication costs. Therefore, printable conductors with high conductivity would be critical for low-cost printed electronics. Earlier work on printable conductors was focused on organic materials such as polyaniline and PEDOT doped with PSS. Besides their potential thermal and electrical instabilities, these materials generally have very low conductivity less than 10 S/cm. In view of printability, conductivity, and electrical stability, metal such as gold or silver derived from solution-deposited precursor compositions would be ideal. In the past decade, Xerox has been exploring the use of silver complex and silver nanoparticles as conductor precursor composition for printed electronics. This talk will review our research in the development of silver nanoparticles that can be sintered at low temperature (< 120 C) for high conductivity (>10000 S/cm), silver nanoparticle ink formations that exhibit surface-energy independent printability and self-assembly characteristic for defect-free printing.
Yiliang Wu, Principal Scientist
Xerox Research Centre of Canada
Mississauga, Ontario

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