Thinning of large-area graphene film from multilayer to bilayer with a low-power CO2 laser

Zhe Lin, Ting Huang, Xiaohui Ye, Minlin Zhong, Lin Li, Juan Jiang, Wen Zhang, Lili Fan, Hongwei Zhu

研究成果: Article査読

22 被引用数 (Scopus)

抄録

Bilayer graphene has attracted a great deal of attention for many electronic and optical applications. Although large-area bilayer graphene can be synthesized by chemical vapor deposition (CVD), multilayer growth often occurs and subsequent processes are required to obtain uniform bilayer films. We report an efficient way of thinning multilayer graphene film by low-power CO2 laser irradiation in vacuum. With a laser power density of ∼102 W cm-2, pristine graphene film of 4-5 layers can be thinned to a bilayer free of defects in 30 s. Contrary to previous laser-assisted graphene thinning processes, which reduced graphene layers precisely and locally with a high power density and a small beam diameter, our approach enables high-efficiency thinning of large-area graphene film whilst using a significantly reduced power density and an increased laser beam diameter.

本文言語English
論文番号275302
ジャーナルNanotechnology
24
27
DOI
出版ステータスPublished - 2013 7 12
外部発表はい

ASJC Scopus subject areas

  • バイオエンジニアリング
  • 化学 (全般)
  • 材料科学(全般)
  • 材料力学
  • 機械工学
  • 電子工学および電気工学

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