Nickel-copper hybrid electrodes self-adhered onto a silicon wafer by supersonic cold-spray

Jong Gun Lee, Do Yeon Kim, Byungjun Kang, Donghwan Kim, Hee Eun Song, Jooyoung Kim, Woonsuk Jung, Dukhaeng Lee, Salem S. Al-Deyab, Scott C. James, Suk Goo Yoon

Research output: Contribution to journalArticlepeer-review

32 Citations (Scopus)


Abstract High-performance electrodes are fabricated through supersonic spraying of nickel and copper particles. These electrodes yield low specific resistivities, comparable to electrodes produced by screen-printed silver paste and light-induced plating. The appeal of this fabrication method is the low cost of copper and large area scalability of supersonic spray-coating techniques. The copper and nickel electrode was fabricated in the open air without any pre- or post-treatment. The spray-coated copper-nickel electrode was characterized by optical microscopy, scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray diffraction, and energy dispersive spectroscopy. Although both SEM and TEM images confirmed voids trapped between flattened particles in the fabricated electrode, this electrode's resistivity was order 10<sup>-6</sup> Ω cm, which is comparable to the bulk value for pure copper.

Original languageEnglish
Article number12077
Pages (from-to)156-163
Number of pages8
JournalActa Materialia
Publication statusPublished - 2015 Apr 1


  • Contact resistivity
  • Nickel-copper electrode
  • Silicon solar cell
  • Specific resistivity
  • Supersonic cold spraying

ASJC Scopus subject areas

  • Ceramics and Composites
  • Metals and Alloys
  • Polymers and Plastics
  • Electronic, Optical and Magnetic Materials


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