• 文献标题:   Raman spectroscopy of the internal strain of a graphene layer grown on copper tuned by chemical vapor deposition
  • 文献类型:   Article
  • 作  者:   YU V, WHITEWAY E, MAASSEN J, HILKE M
  • 作者关键词:  
  • 出版物名称:   PHYSICAL REVIEW B
  • ISSN:   2469-9950 EI 2469-9969
  • 通讯作者地址:   McGill Univ
  • 被引频次:   47
  • DOI:   10.1103/PhysRevB.84.205407
  • 出版年:   2011

▎ 摘  要

Strain can be used as an alternate way to tune the electronic properties of graphene. Here we demonstrate that it is possible to tune the uniform strain of graphene simply by changing the chemical-vapor-deposition growth temperature of graphene on copper. Due to the cooling of the graphene on a copper substrate, we can induce a uniform compressive strain on graphene. The strain is analyzed by Raman spectroscopy, where a shift in the two-dimensional peak is observed and compared to our ab initio calculations of the graphene on a copper system as a function of strain, exhibiting a change in Fermi energy as a function of strain.