• 文献标题:   Zenith-angle resolved polarized Raman spectroscopy of graphene
  • 文献类型:   Article
  • 作  者:   LENG YC, CHEN T, LIN ML, LI XL, LIU XL, TAN PH
  • 作者关键词:   zenithangle resolved polarized raman, spectroscopy, two dimensional material, interference effect
  • 出版物名称:   CARBON
  • ISSN:   0008-6223 EI 1873-3891
  • 通讯作者地址:  
  • 被引频次:   1
  • DOI:   10.1016/j.carbon.2022.02.012 EA FEB 2022
  • 出版年:   2022

▎ 摘  要

Angle resolved polarized Raman (ARPR) spectroscopy has been widely used to study basic properties of two-dimensional materials (2DMs), such as underlying symmetry, mode assignment, crystallographic orientation and optical anisotropy. The substrate effect has never been uncovered in ARPR spectroscopy. In this work, we investigated zenith-angle resolved polarized Raman (ZRPR) spectra of the G mode of graphene (1LG) deposited on different substrates as well as graphite under in-plane and out-of-plane configurations. In contrast to the independent behavior in normal incidence geometry, the G mode in-tensity exhibits obvious zenith-angle dependence. In particular, this polarization behavior is sensitive to the underlying substrates underneath 1LG. The ZRPR intensity of the G mode can be well understood by a model considering both Raman selection rule and zenith-angle resolved interference effect. This work enriches the understanding of polarized Raman spectroscopy of 2DMs and the approach can be appli-cable to other 2DMs, especially in-plane anisotropic 2DMs. (c) 2022 Elsevier Ltd. All rights reserved.