Effect of charge puddles and ripples on the chemical reactivity of single layer graphene supported by SiO2/Si substrate

Xiaoyan Fan, Ryo Nouchi, Katsumi Tanigaki

研究成果: Article査読

70 被引用数 (Scopus)

抄録

Graphene fabricated on a SiO2/Si substrate by mechanical exfoliation has two features: one is charge (electron and hole) puddles which inhomogeneously distribute on graphene flakes, and the other is ripples which exist in two-dimensional crystals. The effects of these two features on the chemical reactivity of graphene flakes toward the charge transfer chemistries with nitrobenzene diazonium tetrafluoroborate are explored by Raman spectroscopy. The results indicate that the electron puddles and more corrugated regions possess enhanced chemical reactivity. The anomalously large reactivity of single layer graphene as compared to multilayer graphene can be the combined action of these two factors.

本文言語English
ページ(範囲)12960-12964
ページ数5
ジャーナルJournal of Physical Chemistry C
115
26
DOI
出版ステータスPublished - 2011 7月 7

ASJC Scopus subject areas

  • 電子材料、光学材料、および磁性材料
  • エネルギー(全般)
  • 物理化学および理論化学
  • 表面、皮膜および薄膜

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