High-current reliability and growth conditions of multilayer graphene wire obtained by annealing sputtered amorphous carbon

Motonobu Sato, Makoto Takahashi, Haruhisa Nakano, Takayuki Muro, Yuji Takakuwa, Shintaro Sato, Mizuhisa Nihei, Naoki Yokoyama

研究成果: Article

4 引用 (Scopus)

抜粋

We fabricated multilayer graphene directly on SiO2 by annealing of sputtered amorphous carbon under a catalyst layer without complicated transfer processes, and investigated the effects of the catalysts and the annealing ambient gases on obtaining large-grain, multilayer graphene. As a result, it was found that annealing conditions with a Co catalyst layer in a nitrogen gas atmosphere are important for increasing the ratio of oriented graphene sheets, corresponding to a lower resistivity of the film. Furthermore, it was confirmed that the multilayer graphene wire obtained by optimizing the growth conditions can sustain a high current density of 107 A/cm2, that is, the lifetime of the multilayer graphene wire is over two orders of magnitude longer than that of a Cu wire with the same current density; this current density is over one order of magnitude higher than the current density that can be carried by a Cu wire for the same lifetime.

元の言語English
記事番号04CB07
ジャーナルJapanese journal of applied physics
52
発行部数4 PART 2
DOI
出版物ステータスPublished - 2013 4 1

ASJC Scopus subject areas

  • Engineering(all)
  • Physics and Astronomy(all)

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