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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 896Effect of Oxygen Plasma on the Optical Properties...

Effect of Oxygen Plasma on the Optical Properties of Monolayer Graphene

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Abstract:

The significant alteration of absorption (A) of monolayer graphene under mild oxygen plasma exposure has been observed. The first important effect is the reduction of the excitonic resonance peak at 4.64 eV. Secondly, in the near infrared range, A is gradually suppressed below an exposure-dependent threshold in sense that A << A₀. Quantity A₀ (given by πα and α is the fine structure constant) denotes constant absorption and relates to universal optical conductivity σ₀. The suppression of A₀ can be thought as the weakening of electron-hole interaction as displayed by the reduction of the excitonic resonance peak at 4.64 eV. The weakening of this interaction is due to the disorder introduced by the oxygen plasma exposure.

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Graphene

Advanced Materials Science and Technology

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Periodical:

Advanced Materials Research (Volume 896)

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510-513

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.896.510

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Online since:

February 2014

Authors:

Iman Santoso*, Ram Sevak Singh, Pranjal Kumar Gogoi, Teguh Citra Asmara, Da Cheng Wei, Wei Chen, Andrew T.S. Wee, Vitor M. Pereira, Andrivo Rusydi

Keywords:

Disorder, Graphene, Interaction, Optical Absorption, Spectroscopic Ellipsometry

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[1] A.H. Castro Neto, F. Guinea, N. M. R. Peres, K. S. Novoselov, and A. K. Geim, The Electronic Properties of Graphene, Rev. Mod. Phys. 81 (2009) 109.

DOI: 10.1103/revmodphys.81.109

[2] N. M. Peres, The Transport Properties of Graphene, Rev. Mod. Phys. 82 (2010) 2673.

[3] I. Santoso, P. K. Gogoi, H. B. Su, H. Huang, Y. Lu, D. Qi, W. Chen, M. A. Majidi, Y. P Feng, A. T. S. Wee, K. P. Loh, T. Venkatesan, R. P. Saichu, A. Goos, A. Kotlov, M. Ruebhausen, and A. Rusydi, Observation of Room-Temperature High-Energy Resonant Excitonic Effets in Graphene, Phys. Rev. B 84 (2011).

DOI: 10.1103/physrevb.84.081403

[4] P. K. Gogoi, I. Santoso, S. Saha, S. Wang, A. H. Castro Neto, K. P. Loh, T. Venkatesan, A. Rusydi, Optical Conductivity Study of screening of many-body effects in graphene interfaces, Europhys. Lett. 99 (2012) 67009.

DOI: 10.1209/0295-5075/99/67009

[5] L. Yang, J. Deslippe, C.H. Park, M.L. Cohen, and S.G. Louie, Excitonic Effects on the Optical Response of Graphene and Bilayer Graphene, Phys. Rev. Lett. 103 (2009) 186802.

DOI: 10.1103/physrevlett.103.186802

[6] V. G. Kravets, A. N. Grigorenko, R. R. Nair, P. Blake, S. Anissimova, K. S. Novoselov, and A. K. Geim, Spectroscopic Ellipsometry of Graphene and an exciton-shifted van Hove peak in Absorption, Phys. Rev. B 81 (2010) 155413.

DOI: 10.1103/physrevb.81.155413

[7] K. F. Mak, J. Shan, and T. F. Heinz, Seeing Many-Body Effects in Single-and Few-Layer Graphene: Observation of Two Dimensional Saddle-Point Excitons, Phys. Rev. Lett. 106 (2011) 046401.

DOI: 10.1103/physrevlett.106.046401

[8] D. H. Chae, T. Utikal, S. Weisenburger, H. Giessen, K. von Klitzing, M. Lippitz, and J. Smet, Excitonic Fano Resonance in Free-Standing Graphene, Nano Lett. 11 (2011) 1379.

DOI: 10.1021/nl200040q

[9] V. N. Kotov, B. Uchoa, V. M. Pereira, F. Guinea, and A. H. Castro Neto, Electron-Electron Interactions in Graphene, Rev. Mod. Phys. 84 (2012) 1067.

DOI: 10.1103/revmodphys.84.1067

[10] J. H. Chen, W.G. Cullen, C. Jang, M.S. Fuhrer, and E.D. Williams, Defect Scattering in Graphene, Phys. Rev. Lett. 102 (2009) 236805.

[11] J. H. Chen, C. Jang, S. Adam, M. S. Fuhrer, E. D. Williams, and M. Ishigami, Charged-Impurity Scattering in Graphene, Nat. Phys. 4 (2008) 377.

DOI: 10.1038/nphys935

[12] D. C. Elias, R. R. Nair, T. M. G. Mohiuddin, S. V. Morozov, P. Blake, M. P. Halsall, A. C. Ferrari, D. W. Boukhvalov, M. I. Katsnelson, A. K. Geim, K. S. Novoselov, Control of Graphene's Properties by Reversible Hydrogenation: Evidence for Graphane, Science 323 (2009).

DOI: 10.1126/science.1167130

[13] T. O. Wehling, S. Yuan, A. I. Lichtenstein, A. K. Geim, and M. I. Katsnelson, Resonant Scattering by Realistic Impurities in Graphene, Phys. Rev. Lett. 105 (2010) 056802.

DOI: 10.1103/physrevlett.105.056802

[14] S. Yuan, R. Roldan, H. de Raedt, and M. I. Katsnelson, Optical Conductivity of Disordered Graphene beyond the Dirac Cone Approximation, Phys. Rev. B 84 (2011) 195418.

DOI: 10.1103/physrevb.84.195418

[15] V. M. Pereira, F. Guinea, J. M. B. Lopes dos Santos, N. M. R. Peres and A. H. Castro Neto, Disorder Induced Localized States in Graphene, Phys. Rev. Lett. 96 (2006) 036801.

DOI: 10.1103/physrevlett.98.259902

[16] N. Jung, B. Kim, A. C. Crowther, N. Kim, C. Nuckolls, and L. Brus, Optical Reflectivity and Raman Scattering in Few-Layer-Thick Graphene highly Doped by K and Rb, ACS Nano 5 (2011) 5708.

DOI: 10.1021/nn201368g

[17] A. C. Crowther, A. Ghassaei, N. Jung, L. E. Brus, Strong Charge-Transfer Doping of 1 to 10 Layer Graphene by NO2, ACS Nano 6 (2012) 1865.

DOI: 10.1021/nn300252a

[18] I. Santoso, R. S. Singh, P. K. Gogoi, T. C. Asmara, D. Wei, W. Chen, A. T. S. Wei, V. M. Pereira, A. Rusydi, Tunable Optical Absorption and Interactions in Graphene via Oxygen Plasma, Phys. Rev. B (2013), in press. Condmat arXiv: 1307. 1358.

DOI: 10.1103/physrevb.89.075134

[19] K. F. Mak, M. Y. Sfeir, Y. Wu, C. H. Lui, J. A. Misewich, and T. F. Heinz, Measurement of the Optical Conductivity of Graphene, Phys. Rev Lett. 101 (2008) 196405.

DOI: 10.1103/physrevlett.101.196405