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Electronic and optical properties of metal-nanoparticle filled graphene sandwiches

机译：金属纳米颗粒填充石墨烯三明治的电子和光学性质

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摘要

We sandwich gold nanoparticles between graphene sheets and contrast the electronic and optical properties of these hybrid structures to those of single layer graphene with and without gold nanoparticle overlayers, and laminated unfilled double layers. Undecorated graphene has the highest sheet resistance while filled sandwiches have the lowest. The optical extinction spectrum for sandwiches is redshifted and broadened compared to decorated single layer graphene. We also find that the presence of gold nanoparticles in sandwiches shifts the work function relative to unfilled double-layer graphene. The low sheet resistance and favorable optical properties of metal-filled sandwiches make them attractive candidates for optoelectronic applications.
机译：我们将金纳米颗粒夹在石墨烯片之间，并将这些杂化结构的电子和光学特性与具有和不具有金纳米颗粒覆盖层的单层石墨烯以及层压的未填充双层对比。未经修饰的石墨烯具有最高的薄层电阻，而填充的三明治具有最低的薄层电阻。与装饰单层石墨烯相比，三明治的消光光谱发生了红移和加宽。我们还发现，三明治中金纳米颗粒的存在相对于未填充的双层石墨烯而言改变了功函数。金属填充的三明治的低薄层电阻和良好的光学性能使其成为光电应用的有吸引力的候选材料。

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  • 来源
    《Applied Physics Letters》 |2013年第2期|023108.1-023108.4|共4页
  • 作者

    Anna M. Zaniewski; Maria Schriver; J. Gloria Lee; M. F. Crommie; A. Zettl;

  • 作者单位

    Department of Physics, University of California at Berkeley, Berkeley, California 94720, USA,Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA,Center of Integrated Nanomechanical Systems, University of California, Berkeley, Berkeley, California 94270, USA;

    Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA,Department of Mechanical Engineering, University of California at Berkeley, Berkeley, California 94720,USA;

    Department of Physics, University of California at Berkeley, Berkeley, California 94720, USA,Center of Integrated Nanomechanical Systems, University of California, Berkeley, Berkeley, California 94270, USA;

    Department of Physics, University of California at Berkeley, Berkeley, California 94720, USA,Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA,Center of Integrated Nanomechanical Systems, University of California, Berkeley, Berkeley, California 94270, USA;

    Department of Physics, University of California at Berkeley, Berkeley, California 94720, USA,Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA,Center of Integrated Nanomechanical Systems, University of California, Berkeley, Berkeley, California 94270, USA;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
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