1. 平台首页
  2. 国际论文信息
  • 文献标题:   Surface-enhanced Raman scattering in graphene deposited on AlxGa1-xN/GaN axial heterostructure nanowires
  • 文献类型:   Article
  • 作　　者:   KIERDASZUK J, TOKARCZYK M, CZAJKOWSKI KM, BOZEK R, KRAJEWSKA A, PRZEWLOKA A, KASZUB W, SOBANSKA M, ZYTKIEWICZ ZR, KOWALSKI G, ANTOSIEWICZ TJ, KAMINSKA M, WYSMOLEK A, DRABINSKA A
  • 作者关键词:   graphene, nanowire, gallium nitride, polarization, raman spectroscopy, electroreflectance, carrier concentration, kpfm
  • 出版物名称:   APPLIED SURFACE SCIENCE
  • ISSN:   0169-4332 EI 1873-5584
  • 通讯作者地址:   Univ Warsaw
  • 被引频次:   2
  • DOI:   10.1016/j.apsusc.2019.01.040
  • 出版年:   2019

▎ 摘　　要

The surface-enhanced Raman scattering in graphene deposited on AlxGa1-xN/GaN axial heterostructure nanowires was investigated. It was found that the intensity of graphene Raman spectra is not correlated with aluminium content. Analysis of graphene Raman band parameters, Kelvin probe force microscopy, and electroreflectance showed a screening of polarisation charges. Theoretical calculations demonstrated that plasmon resonance in graphene is far beyond the Raman spectral range. This excludes the presence of an electromagnetic mechanism of surface-enhanced Raman scattering, hence suggesting a chemical mechanism of enhancement.