Deep-ultraviolet Raman scattering studies of monolayer graphene thin films

Hsiang Lin Liu, Syahril Siregar, Eddwi H. Hasdeo, Yasuaki Kumamoto, Chih Chiang Shen, Chia Chin Cheng, Lain Jong Li, Riichiro Saito, Satoshi Kawata

Research output: Contribution to journalArticle

17 Citations (Scopus)

Abstract

We present joint experimental and theoretical investigations of the deep-ultraviolet Raman scattering spectra of monolayer graphene thin films. We found that upon a 266 nm laser excitation, while the G mode remains pronounced, the G0 mode is not observed. The G0 mode exhibits distinctive linewidth broadening towards the ultraviolet frequency region. The peak intensity ratio of the G0 and G modes increases dramatically excited at 355, 532, and 785 nm wavelengths. All of the experimental findings are in good agreement with the theory calculated by the tight-binding method. We theoretically show that the integrated intensity of the G0 mode is inversely proportional to the incident photon energy, whereas that of the G mode increases as the fourth power of the incident photon energy. These results extend our understanding of the double resonance Raman scattering process of graphene away from the Dirac cones and provide the foundation for future technologically important developments of graphene in the deep-ultraviolet frequency range.

Original languageEnglish
Pages (from-to)807-813
Number of pages7
JournalCarbon
Volume81
Issue number1
DOIs
Publication statusPublished - 2015 Jan 1

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Graphite
Graphene
Raman scattering
Monolayers
Thin films
Photons
Laser excitation
Laser modes
Linewidth
Cones
Wavelength

ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Science(all)

Cite this

Liu, H. L., Siregar, S., Hasdeo, E. H., Kumamoto, Y., Shen, C. C., Cheng, C. C., ... Kawata, S. (2015). Deep-ultraviolet Raman scattering studies of monolayer graphene thin films. Carbon, 81(1), 807-813. https://doi.org/10.1016/j.carbon.2014.10.028

Deep-ultraviolet Raman scattering studies of monolayer graphene thin films. / Liu, Hsiang Lin; Siregar, Syahril; Hasdeo, Eddwi H.; Kumamoto, Yasuaki; Shen, Chih Chiang; Cheng, Chia Chin; Li, Lain Jong; Saito, Riichiro; Kawata, Satoshi.

In: Carbon, Vol. 81, No. 1, 01.01.2015, p. 807-813.

Research output: Contribution to journalArticle

Liu, HL, Siregar, S, Hasdeo, EH, Kumamoto, Y, Shen, CC, Cheng, CC, Li, LJ, Saito, R & Kawata, S 2015, 'Deep-ultraviolet Raman scattering studies of monolayer graphene thin films', Carbon, vol. 81, no. 1, pp. 807-813. https://doi.org/10.1016/j.carbon.2014.10.028
Liu HL, Siregar S, Hasdeo EH, Kumamoto Y, Shen CC, Cheng CC et al. Deep-ultraviolet Raman scattering studies of monolayer graphene thin films. Carbon. 2015 Jan 1;81(1):807-813. https://doi.org/10.1016/j.carbon.2014.10.028
Liu, Hsiang Lin ; Siregar, Syahril ; Hasdeo, Eddwi H. ; Kumamoto, Yasuaki ; Shen, Chih Chiang ; Cheng, Chia Chin ; Li, Lain Jong ; Saito, Riichiro ; Kawata, Satoshi. / Deep-ultraviolet Raman scattering studies of monolayer graphene thin films. In: Carbon. 2015 ; Vol. 81, No. 1. pp. 807-813.
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