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

J. R. Rani, Juhwan Lim, Juyeong Oh, Dukhan Kim, Dongil Lee, Jung Woo Kim, Hyeon Suk Shin, Jae Hun Kim, Seong Chan Jun

Research output: Contribution to journalArticle

26 Citations (Scopus)

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.

Original languageEnglish
Pages (from-to)5926-5936
Number of pages11
JournalRSC Advances
Volume3
Issue number17
DOIs
Publication statusPublished - 2013 May 7

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Chemical Engineering(all)

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