• 文献标题:   Defect-induced Raman spectroscopy in single-layer graphene with boron and nitrogen substitutional defects by theoretical investigation
  • 文献类型:   Article
  • 作  者:   JIANG J, PACHTER R, ISLAM AE, MARUYAMA B, BOECKL JJ
  • 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:   Air Force Res Lab
  • 被引频次:   1
  • DOI:   10.1016/j.cplett.2016.09.067
  • 出版年:   2016

▎ 摘  要

Although advances in heteroatom incorporation into the single-layer graphene lattice resulted in films with large carrier densities, careful characterization by Raman spectroscopy is important for assessment of the material's quality. We investigated theoretically I(D)/I(D') Raman intensity ratios induced by B- and N- substitutional doping, demonstrated to be consistent with measurements. Calculated Fermi level shifts showed that for a moderate doping density results are comparable to electrolyte gating, while analytical analysis of the electron-defect scattering provided insight into changes of cross-sections. Effects of doping density on the D band intensity and broadening were quantified, and will assist in graphene characterization. (C) 2016 Published by Elsevier B.V.