Aromatic molecules doping in single-layer graphene probed by Raman spectroscopy and electrostatic force microscopy

Xiaochen Dong*, Yumeng Shi, Peng Chen, Qidan Ling, Wei Huang

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

14 Scopus citations

Abstract

Electrostatic force microscopy (EFM) and Raman spectroscopy are used to study the effects of aromatic molecules on the doping level of single layer graphene (SLG). The EFM results demonstrate that the aromatic molecules with electron-donating group (n-doping) decrease the surface potential of the SLG films, while the molecules with electron-withdrawing groups (n-doping) increase their surface potential. Meanwhile, Raman spectra indicate that the aromatic molecules with electron-withdrawing groups make the SLG p-dope and upshifts in both Raman G and 2D frequencies. While the aromatic molecules with electron-donating groups n-dope the SLG and up-shift the 2D-but down-shift the G-band frequencies.

Original languageEnglish (US)
Article number01AH04
JournalJapanese Journal of Applied Physics
Volume49
Issue number1 Part 2
DOIs
StatePublished - Apr 19 2010

ASJC Scopus subject areas

  • Engineering(all)
  • Physics and Astronomy(all)

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