• 文献标题:   Crystallographic orientation of early domains in CVD graphene studied by Raman spectroscopy
  • 文献类型:   Article
  • 作  者:   JEGAL S, HAO YF, YOON D, RUOFF RS, YUN H, LEE SW, CHEONG H
  • 作者关键词:  
  • 出版物名称:   CHEMICAL PHYSICS LETTERS
  • ISSN:   0009-2614 EI 1873-4448
  • 通讯作者地址:   Sogang Univ
  • 被引频次:   9
  • DOI:   10.1016/j.cplett.2013.03.043
  • 出版年:   2013

▎ 摘  要

Crystallographic orientations of early multi-lobe graphene domains in CVD-grown graphene are investigated. Partially grown graphene domains were transferred onto flexible substrates and uniaxial tensile strain was applied. From the polarization dependence of the Raman G band, split due to strain, the crystallographic orientation was determined. It was found that there are some single crystal domains. However, lobes have different orientations in some other multi-lobe domains. Within a given lobe, the orientation does not change as the domain grows, indicating that the orientations present in a graphene domain are determined at an early stage of growth. (C) 2013 Elsevier B.V. All rights reserved.