Journal
ACS APPLIED MATERIALS & INTERFACES
Volume 7, Issue 23, Pages 12619-12624Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsami.5b02487
Keywords
screen printing; silver ink; silicon stencils; plastic substrates; printed electronics
Funding
- Multi-University Research Initiative (MURI) program - Office of Naval Research (MURI) [N00014-11-1-0690]
- Wyss Institute at Harvard University
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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 mu m wide. This approach enables printing of high-resolution silver lines with widths as small as 22 mu m. The printed silver lines on polyimide exhibit good electrical properties with a resistivity of 5.5 x 10(-6) Omega cm and excellent bending tolerance for bending radii greater than 5 mm (tensile strains less than 0.75%).
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