• 文献标题:   Direct Synthesis of Graphene Meshes and Semipermanent Electrical Doping
  • 文献类型:   Article
  • 作  者:   YI J, LEE DH, LEE WW, PARK WI
  • 作者关键词:  
  • 出版物名称:   JOURNAL OF PHYSICAL CHEMISTRY LETTERS
  • ISSN:   1948-7185
  • 通讯作者地址:   Hanyang Univ
  • 被引频次:   20
  • DOI:   10.1021/jz400940d
  • 出版年:   2013

▎ 摘  要

Here we describe a new method for the direct patterned synthesis of graphene meshes on Cu foils that use self-assembled silica sphere arrays as growth masks. Structural analyses based on electron microscopy and Raman spectroscopy showed that the graphene meshes are mostly single- or double-layer necks with empty holes that have abrupt edges. On the basis of experimental observations, we proposed the model illustrating the dissociation of carbon atoms at the Cu/silica interface through catalytic hydrogenation of the graphene lattice. Moreover, our approach can minimize problems associated with the graphene etching process, including contamination and exposure to reactive plasma. This enables stable electronic doping through covalent C-N bonds at the edges of graphene meshes.