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Issue 17, 2013

Substrate and buffer layer effect on the structural and optical properties of graphene oxide thin films

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Abstract

Graphene oxide (GO) thin films on various substrates show surprising variations of their structural and optical properties. These variations were also studied by depositing GO via introducing a gold nanoparticles buffer layer on quartz substrate. The effect of the substrate as well as buffer layer results in short range order crystallization in deposited GO films with an increase in inter-planar spacing. XPS analysis shows that GO undergoes reduction when spin coated on ITO/glass substrate. The deposited GO films exhibit luminescence emission, and the introduction of gold buffer layer results in a blue shift of the photoluminescent emission spectra. The GO on gold buffer layer shows almost constant optical absorption in the whole visible spectral region like graphene. The present study indicates that buffer layer effects and the interaction between different substrates and GO is strong enough to affect the oxygen linkages in GO which in turn changes its structural and optical properties, which may find potential application in graphene based optoelectronic device fabrication.

Graphical abstract: Substrate and buffer layer effect on the structural and optical properties of graphene oxide thin films

Article information


Submitted
27 Nov 2012
Accepted
30 Jan 2013
First published
31 Jan 2013

RSC Adv., 2013,3, 5926-5936
Article type
Paper

Substrate and buffer layer effect on the structural and optical properties of graphene oxide thin films

J. R. Rani, J. Lim, J. Oh, D. Kim, D. Lee, J. Kim, H. S. Shin, J. H. Kim and S. C. Jun, RSC Adv., 2013, 3, 5926 DOI: 10.1039/C3RA00028A

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