Humidity Sensing by Chemically Reduced Graphene Oxide

  • Ruma Ghosh
  • Anupam Midya
  • Sumita Santra
  • Samit K. Ray
  • Prasanta K. Guha
Part of the Environmental Science and Engineering book series (ESE)

Abstract

Reduced Graphene Oxide (RGO) has been synthesized chemically by reducing micron-sized Graphene Oxide (GO) flakes using sodium borohydride solution. Indium Tin Oxide (ITO) coated glass was taken as the basic substrate for sensing layer deposition. Sensitivity tests for relative humidity (RH) measurements were carried out at five different concentrations of humid air at room temperature. The response of the sensor was found to vary between 3.8 for 10 % humid air and 20.4 for 100 % humid air. Characterizations of the sensing layer were carried out using Atomic Force Microscopy (AFM) and Field Emission Scanning Electron Microscopy (FESEM).

Keywords

Graphene sensor Relative humidity sensor Room temperature sensor 

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Notes

Acknowledgments

S. Santra acknowledges Department of Science and Technology (DST), India for the partial support of the work (project no SR/S2/RJN-104/2011).

References

  1. 1.
    J. T. Robinson, F. K. Perkins, E. S. Snow, Z. Wei and P. E. Sheehan, Nanoletters, 8, 3137 (2008).Google Scholar
  2. 2.
    S. Rumyantsev, G. Liu, M. S. Shur, R. A. Potyrailo and A. A. Balandin, Nanoletters, 12, 2294 (2012).Google Scholar
  3. 3.
    S. Tang and Z. Cao, J. Phys. Chem. C, 116, 8778 (2012).CrossRefGoogle Scholar
  4. 4.
    R. Ghosh, A. Midya, S. Santra, S. K. Ray, P. K. Guha, ACS Appl. Mater. Interfaces. 5, 7599 (2013).CrossRefGoogle Scholar
  5. 5.
    W. S. Hummers and R. E. Offeman, J. Am. Chem. Soc., 80 (6), 1339 (1958).CrossRefGoogle Scholar
  6. 6.
    B. Guo, Q. Liu, E. Chen, H. Zhu, L. Fang and J. R. Gong, Nano Lett., 10, 4975 (2010).CrossRefGoogle Scholar
  7. 7.
    W. D. Lin, H. M. Chang and R. J. Wu, Sens. Act. B, 181, 326 (2013).Google Scholar

Copyright information

© Springer International Publishing Switzerland 2014

Authors and Affiliations

  • Ruma Ghosh
    • 1
  • Anupam Midya
    • 2
  • Sumita Santra
    • 2
  • Samit K. Ray
    • 2
  • Prasanta K. Guha
    • 1
  1. 1.Department of Electronics and Electrical Communication EngineeringIITKharagpurIndia
  2. 2.Department of Physics and MeteorologyIITKharagpurIndia

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