Doping modulated in-plane anisotropic Raman enhancement on layered ReS2

  • Na Zhang
  • Jingjing Lin
  • Shuqing Zhang
  • Shishu Zhang
  • Xiaobo Li
  • Dongyan Liu
  • Hua Xu
  • Jin Zhang
  • Lianming TongEmail author
Research Article


Anisotropic two-dimensional (2D) materials exhibit lattice-orientation dependent optical and electrical properties. Carriers doping of such materials has been used to modulate their energy band structures for opto-electronic applications. Herein, we show that by stacking monolayer rhenium disulfide (ReS2) on a flat gold film, the electrons doping in ReS2 can affect the in-plane anisotropic Raman enhancement of molecules adsorbed on ReS2. The change of enhancement factor and the degree of anisotropy in enhancement with layer number are sensitively dependent on the doping level of ReS2 by gold, which is further confirmed by Kelvin probe force microscopy (KPFM) measurements. These findings could open an avenue for probing anisotropic electronic interactions between molecules and 2D materials with low symmetry using Raman enhancement effect.


ReS2 anisotropy charge transfer Raman enhancement electrons doping 


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The authors thank J. Guan and B. Ma for the vacuum thermal deposition, L. Sun for providing the graphene sample, and S. Jiang for the CVD-grown ReS2 sample. This work was supported by the National Natural Science Foundation of China (Nos. 51432002, 51720105003, 21790052, 11374355 and 21573004), the Ministry of Science and Technology of China (Nos. 2016YFA0200100 and 2015CB932400), and the Beijing Municipal Science and Technology Project (No. Z161100002116026).

Supplementary material

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Doping modulated in-plane anisotropic Raman enhancement on layered ReS2


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Copyright information

© Tsinghua University Press and Springer-Verlag GmbH Germany, part of Springer Nature 2018

Authors and Affiliations

  • Na Zhang
    • 1
  • Jingjing Lin
    • 1
  • Shuqing Zhang
    • 1
  • Shishu Zhang
    • 1
  • Xiaobo Li
    • 2
  • Dongyan Liu
    • 2
  • Hua Xu
    • 2
  • Jin Zhang
    • 1
  • Lianming Tong
    • 1
    Email author
  1. 1.Center for Nanochemistry, Beijing Science and Engineering Center for Nanocarbons, Beijing National Laboratory for Molecular Sciences, College of Chemistry and Molecular EngineeringPeking UniversityBeijingChina
  2. 2.School of Materials Science and EngineeringShaanxi Normal UniversityXi’anChina

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