title: Screen Printing of Highly Loaded Silver Inks on Plastic Substrates Using Silicon Stencils.
abstract: Screen printing is a potential technique for mass-production of printed electronics; however, improvement in printing resolution is needed for high integration and performance. In this study, screen printing of highly loaded silver ink (77 wt %) on polyimide films is studied using fine-scale silicon stencils with openings ranging from 5 to 50 μm wide. This approach enables printing of high-resolution silver lines with widths as small as 22 μm. The printed silver lines on polyimide exhibit good electrical properties with a resistivity of 5.5×10(-6) Ω cm and excellent bending tolerance for bending radii greater than 5 mm (tensile strains less than 0.75%).
authors.affiliation: †Department of Chemical Engineering and Materials Science, University of Minnesota, 421 Washington Avenue SE, Minneapolis, Minnesota 55455, United States.
authors.forename: Woo Jin
authors.initials: WJ
authors.lastname: Hyun
authors.affiliation: †Department of Chemical Engineering and Materials Science, University of Minnesota, 421 Washington Avenue SE, Minneapolis, Minnesota 55455, United States.
authors.forename: Sooman
authors.initials: S
authors.lastname: Lim
authors.affiliation: ‡School of Engineering and Applied Science, Wyss Institute for Biologically Inspired Engineering, Harvard University, 52 Oxford Street. Cambridge, Massachusetts 02138, United States.
authors.forename: Bok Yeop
authors.initials: BY
authors.lastname: Ahn
authors.affiliation: ‡School of Engineering and Applied Science, Wyss Institute for Biologically Inspired Engineering, Harvard University, 52 Oxford Street. Cambridge, Massachusetts 02138, United States.
authors.forename: Jennifer A
authors.initials: JA
authors.lastname: Lewis
authors.affiliation: †Department of Chemical Engineering and Materials Science, University of Minnesota, 421 Washington Avenue SE, Minneapolis, Minnesota 55455, United States.
authors.forename: C Daniel
authors.initials: CD
authors.lastname: Frisbie
authors.affiliation: †Department of Chemical Engineering and Materials Science, University of Minnesota, 421 Washington Avenue SE, Minneapolis, Minnesota 55455, United States.
authors.forename: Lorraine F
authors.initials: LF
authors.lastname: Francis
keywords: plastic substrates; printed electronics; screen printing; silicon stencils; silver ink