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Article
Impact of Substrate and Process on the Electrical Performance of Screen-Printed Nickel Electrodes: Fundamental Mechanism of Ink Film Roughness
ACS Applied Energy Materials (2018)
  • Bilge N Altay, Western Michigan University
  • Jerome Jourdan
  • Vikram S. Turkani
  • Hervé Dietsch
  • Dinesh Maddipatla
  • Alexandra Pekarovicova
  • Paul D. Fleming
  • Massood Atashbar
Abstract
In recent years, traditional printing methods have been integrated to print flexible electronic devices and circuits. Since process requirements for electronics diff er from those for graphic printing, the fundamentals require rediscovery mainly to optimize manufacturing techniques and to find cost reduction methods without compromising functional performance. In addition, alternative inks need to be formulated to increase the variety of functional inks and to pioneer new product developments. In this report, we investigate a thermoplastic-based nickel ink prototype to print electrodes using a screen-printing process. Process fundamentals are explored, and cost reduction methods are addressed by studying the effect of substrate roughness, print direction, and number of ink layers on the electrical performance
of printed nickel. Multilayered electrodes are printed on paper and heat stabilized engineered fi lm. A novel fundamental
mechanism is found that explains the effect of substrate roughness on ink fi lm roughness in screen printing, including the roughness measurement of the screen mesh wire that is reported for the first time. Results demonstrated that (i) surface roughness of substrates does not have significant effect on printed ink fi lm roughness in screen printing; (ii) ink fi lm thickness is higher on nonabsorbent materials, while line gain is higher on absorbent materials; (iii) the effect of electrode orientation on electrical performance is insignificant; and (iv) the effect of substrate roughness on the electrical performance for the first print layer can be eliminated by printing multiple layers. The results significantly affect substrate choice and number of ink layers, which are considered the major cost factors in the manufacturing of printed electronics.
Keywords
  • nickel nanoparticles,
  • thermoplastic polymer,
  • printed electronics,
  • 4-point probe,
  • screen printing,
  • surface roughness,
  • electrode
Publication Date
November 27, 2018
DOI
10.1021/acsaem.8b01618
Citation Information
Bilge N Altay, Jerome Jourdan, Vikram S. Turkani, Hervé Dietsch, et al.. "Impact of Substrate and Process on the Electrical Performance of Screen-Printed Nickel Electrodes: Fundamental Mechanism of Ink Film Roughness" ACS Applied Energy Materials (2018)
Available at: http://works.bepress.com/bilge-nazli-altay/8/