Fabrication of Large-Area Graphene Using Liquid Gallium and Its Electrical Properties

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概要

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• We demonstrated a new process for synthesizing a graphene sheet at the interface between solid amorphous carbon and liquid gallium. The insolubility of carbon in gallium strongly restricted the depth of graphitization, but a multilayered graphene sheet having four to six layers of graphene was produced over the entire area of the interface immediately beneath the liquid gallium. We also demonstrated the operation of an electric-field-effect device fabricated on the multilayered graphene with a back-gated configuration, and a maximum conductance modulation of 40% was observed for an applied gate voltage ranging from $-100$ to +100 V.

• 2010-06-25

著者

• Takeshi Saito

  PRESTO JST, Japan Science and Technology Agency, Kawaguchi, Saitama 332-0012, Japan

• Fujita Jun-ichi

  PRESTO JST, Japan Science and Technology Agency, Kawaguchi, Saitama 332-0012, Japan

• Miyazawa Yosuke

  PRESTO JST, Japan Science and Technology Agency, Kawaguchi, Saitama 332-0012, Japan

• Ueki Ryuichi

  PRESTO JST, Japan Science and Technology Agency, Kawaguchi, Saitama 332-0012, Japan

• Mio Sasaki

  Institute of Applied Physics, University of Tsukuba, Tsukuba, Ibaraki 305-8573, Japan

• Ryuichi Ueki

  PRESTO JST, Japan Science and Technology Agency, Kawaguchi, Saitama 332-0012, Japan

• Yosuke Miyazawa

  PRESTO JST, Japan Science and Technology Agency, Kawaguchi, Saitama 332-0012, Japan

• Jun-ichi Fujita

  PRESTO JST, Japan Science and Technology Agency, Kawaguchi, Saitama 332-0012, Japan

関連論文

• Fabrication of Large-Area Graphene Using Liquid Gallium and Its Electrical Properties
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