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Effects of light on the resistivity of chemical vapor deposited graphene films

1 Department of Physics, University of North Texas, Denton, Texas 76203
2 Department of Physics, Southern University and A & M College, Baton Rouge, LA 70813
3 Department of Computer Science/LONI, Southern University and A & M College, Baton Rouge, LA 70813

Topical Section: 2D Materials

We report that the resistance of a chemical vapor deposition (CVD) grown graphene film transferred onto an SiO2 substrate increases to higher saturation values upon exposure to light of decreasing wavelength from the visible to ultraviolet. Light in the visible range causes a slight increase of up to 10% in saturation resistance. A significant increase in resistance is found starting at about 400 nm. The saturation resistance approaches up to 3 times the original resistance at 254 nm after 5 min. When the light is removed, the resistance falls to its original value with a time constant of several days. The effect is not observed for samples of CVD-grown graphene films on SiO2 that have been heated in vacuum at 600 ℃, nor single-crystal graphene mechanically exfoliated onto SiO2. We attribute the effect to photo dissociation of interfacial molecules such as H2O adsorbed between the CVD-grown film and SiO2 substrate at grain boundaries in the film.
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1. Novoselov KS, Geim AK, Morozov SV, et al. (2004) Electric field effect in atomically thin carbon films. Science 306: 666–669.    

2. Novoselov KS, Geim AK, Morozov SV, et al. (2005) Two-dimensional gas of massless Dirac fermions in graphene. Nature 438: 197–200.    

3. Novoselov KS, Jiang D, Schedin F, et al. (2005) Two-dimensional atomic crystals. P Natl Acad Sci USA 102: 10451–10453.    

4. Morozov SV, Novoselov KS, Katsnelson MI, et al. (2008) Giant intrinsic carrier mobilities in graphene and its bilayer. Phys Rev Lett 100: 016602.    

5. Schedin F, Geim AK, Morozov SV, et al. (2007) Detection of individual gas molecules adsorbed on graphene. Nat Mater 6: 652–655.    

6. Wehling TO, Novoselov KS, Morozov SV, et al. (2008) Molecular doping of graphene. Nano Lett 8: 173–7.    

7. Ang PK, Chen W, Wee ATS, et al. (2008) Solution-gated epitaxial graphene as pH sensor. J Am Chem Soc 130: 14392–3.    

8. Romero HE, Joshi P, Gupta AK, et al. (2009) Adsorption of ammonia on graphene. Nanotechnology 20: 245501.    

9. Lu G, Ocola LE, Chen J (2009) Reduced graphene oxide for room-temperature gas sensors. Nanotechnology 20: 445502.    

10. Leenaerts O, Partoens B, Peeters FM (2008) Adsorption of H2O, NH3, CO, NO2, and NO on graphene: A first-principles study. Phys Rev B 77: 125416.    

11. Ko G, Kim HY, Ahn J (2010) Graphene-based nitrogen dioxide gas sensors. Current Appl Phys 10: 1002–1004.    

12. Saffarzadeh A (2010) Modeling of gas adsorption on graphene nanoribbons. J Appl Phys 107: 114309.    

13. Leenaerts O, Partoens B, Peeters FM (2009) Water on graphene: Hydrophobicity and dipole moment using density functional theory. Phys Rev B 79: 235440.    

14. Yavari F, Kritzinger C, Gaire C (2010) Tunable bandgap in graphene by the controlled adsorption of water molecules. Small 6: 2535–8.    

15. Wehling TO, Lichtenstein AI, Katsnelson MI (2008) First-principles studies of water adsorption on graphene: The role of the substrate. Appl Phys Lett 93: 202110.    

16. Elias DC, Nair RR, Mohiudin TMG, et al. (2009) Control of graphene's properties by reversible hydrogenation evidence for graphane. Science 323: 610–3.

17. Sofo JO, Chaudhari AS, Barber GD (2007) Graphane: A two-dimensional hydrocarbon. Phys Rev B 75: 153401.    

18. Jones JD, Mahajan KK, Williams WH, et al. (2010) Formation of graphane and partially hydrogenated graphene by electron irradiation of adsorbates on graphene. Carbon 48: 2335–2340.    

19. Acik M, Lee G, Mattevi C, et al. (2010) Unusual infrared-absorption mechanism in thermally reduced graphene oxide. Nat Mater 9: 840–5.    

20. Mkhoyan KA, Stewart DA., Eda G, et al. (2009) Atomic and Electronic Structure of Graphene-Oxide. Nano Lett 9: 1058–63.    

21. Brar VW, Decker R, Solowan HM, et al. (2011) Gate-controlled ionization and screening of cobalt adatoms on a graphene surface. Nat Phys 7: 43–47.    

22. Chan KT, Lee H, Cohen ML (2011) Gated adatoms on graphene studied with first-principles calculations. Phys Rev B 83: 035405.    

23. Chan KT, Lee H, Cohen ML (2011) Possibility of transforming the electronic structure of one species of graphene adatoms into that of another by application of gate voltage First-principles calculation. Phys Rev B 84: 165419.    

24. Lu YH, Shi L, Zhang C, et al. (2009) Electric-field control of magnetic states, charge transfer, and patterning of adatoms on graphene First-principles density functional theory calculations. Phys Rev B 80: 233410.    

25. Liu L, Ryu S, Tomasik MR, et al. (2008) Graphene oxidation: thickness-dependent etching and strong chemical doping. Nano Lett 8: 1965–1970.    

26. Lee D, Ahn G, Ryu S (2014) Two-dimensional water diffusion at a graphene—silica interface. J Am Chem Soc 136: 6634–42.    

27. An J, Voelkl E, Suk JW, et al. (2011) Domain (grain) boundaries and evidence of “twinlike” structures in chemically vapor deposited grown graphene. ACS Nano 5: 2433–9.    

28. Riedl C, Coletti C, Iwasaki T, et al. (2009) Quasi-free-standing epitaxial graphene on SiC obtained by hydrogen intercalation. Phys Rev Lett 103: 246804.    

29. Sutter P, Sadowski JT, Sutter EA (2010) Chemistry under cover: tuning metal-graphene interaction by reactive intercalation. J Am Chem Soc 132: 8175–9.    

30. Imamura G, Saiki K (2015) Modification of graphene/SiO2 interface by UV-irradiation: Effect on electrical characteristics. ACS Appl Mater Inter 7: 47–53.

31. Kostov MK, Santiso EE, George AM, et al. (2005) Dissociation of water on defective carbon substrates. Phys Rev Lett 95: 136105.    

Copyright Info: © 2016, Jose M. Perez, et al., licensee AIMS Press. This is an open access article distributed under the terms of the Creative Commons Attribution Licese (http://creativecommons.org/licenses/by/4.0)

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