Substrate and buffer layer effect on the structural and optical properties of graphene oxide thin films
- Substrate and buffer layer effect on the structural and optical properties of graphene oxide thin films
- J. R. Rani; Juhwan Lim; 오주영; Dukhan Kim; Dongil Lee; Jung-Woo Kim; Hyeon Suk Shin; 김재헌; Seong Chan Jun
- Graphene oxide film; Interface effect; Graphene optical properties
- Issue Date
- RSC advances [electronic resource].
- VOL 3, NO 17, 5926-5936
- 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.
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