Effective fluorination of single-layer graphene by high-energy ion irradiation through a LiF overlayer

Shiro Entani, Masaki Mizuguchi, Hideo Watanabe, Liubov Yu Antipina, Pavel B. Sorokin, Pavel V. Avramov, Hiroshi Naramoto, Seiji Sakai

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

A new non-chemical method for heteroatom doping into single-layer graphene was demonstrated by high-energy ion irradiation of the graphene-based heterostructure. The heterostructure was fabricated by depositing a LiF layer on a single-layer graphene sheet which was grown on a Cu substrate by chemical vapor deposition. We successfully obtained fluorinated graphene by 2.4 MeV 63Cu2+ ion irradiation through the LiF overlayer. Raman spectroscopy, near edge X-ray absorption fine structure spectroscopy and X-ray photoelectron spectroscopy revealed that 20%-fluorinated graphene is obtained superior to the defect formation by the high-energy ion irradiation up to 1014 ions per cm2. It was also shown that the F atoms are chemically adsorbed on single-layer graphene by the C-F bonds in a similar manner to the fluorinated graphene synthesized by the purely chemical route. The mechanism of the fluorination by the ion irradiation is discussed in terms of electronic excitations of carbon and heteroatoms based on the spectroscopic results.

Original languageEnglish
Pages (from-to)68525-68529
Number of pages5
JournalRSC Advances
Volume6
Issue number72
DOIs
Publication statusPublished - Jan 1 2016

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Fluorination
Graphite
Ion bombardment
Graphene
Heterojunctions
X ray absorption near edge structure spectroscopy
Raman spectroscopy
Chemical vapor deposition
Carbon
X ray photoelectron spectroscopy
Doping (additives)
Ions
Atoms
Defects
Substrates

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Chemical Engineering(all)

Cite this

Entani, S., Mizuguchi, M., Watanabe, H., Antipina, L. Y., Sorokin, P. B., Avramov, P. V., ... Sakai, S. (2016). Effective fluorination of single-layer graphene by high-energy ion irradiation through a LiF overlayer. RSC Advances, 6(72), 68525-68529. https://doi.org/10.1039/c6ra09631j

Effective fluorination of single-layer graphene by high-energy ion irradiation through a LiF overlayer. / Entani, Shiro; Mizuguchi, Masaki; Watanabe, Hideo; Antipina, Liubov Yu; Sorokin, Pavel B.; Avramov, Pavel V.; Naramoto, Hiroshi; Sakai, Seiji.

In: RSC Advances, Vol. 6, No. 72, 01.01.2016, p. 68525-68529.

Research output: Contribution to journalArticle

Entani, S, Mizuguchi, M, Watanabe, H, Antipina, LY, Sorokin, PB, Avramov, PV, Naramoto, H & Sakai, S 2016, 'Effective fluorination of single-layer graphene by high-energy ion irradiation through a LiF overlayer', RSC Advances, vol. 6, no. 72, pp. 68525-68529. https://doi.org/10.1039/c6ra09631j
Entani, Shiro ; Mizuguchi, Masaki ; Watanabe, Hideo ; Antipina, Liubov Yu ; Sorokin, Pavel B. ; Avramov, Pavel V. ; Naramoto, Hiroshi ; Sakai, Seiji. / Effective fluorination of single-layer graphene by high-energy ion irradiation through a LiF overlayer. In: RSC Advances. 2016 ; Vol. 6, No. 72. pp. 68525-68529.
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