Rani, J. R. Lim, Juhwan Oh, Juyeong Kim, Dukhan Lee, Dongil Kim, Jung-Woo Shin, Hyeon Suk Kim, Jae Hun Jun, Seong Chan 2024-01-20T12:33:49Z 2024-01-20T12:33:49Z 2021-09-01 2013-04 2046-2069 https://pubs.kist.re.kr/handle/201004/128218 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. English ROYAL SOC CHEMISTRY BAND-GAP DETERMINATION COLLOIDAL DISPERSIONS RAMAN-SPECTRA SINGLE-LAYER XPS ANALYSIS GRAPHITE REDUCTION NANOPARTICLES Substrate and buffer layer effect on the structural and optical properties of graphene oxide thin films Article 10.1039/c3ra00028a 1 RSC ADVANCES, v.3, no.17, pp.5926 - 5936 RSC ADVANCES 3 17 5926 5936 scie scopus 000316965800030 2-s2.0-84875775609 Chemistry, Multidisciplinary Chemistry Article BAND-GAP DETERMINATION COLLOIDAL DISPERSIONS RAMAN-SPECTRA SINGLE-LAYER XPS ANALYSIS GRAPHITE REDUCTION NANOPARTICLES Graphene oxide film Interface effect Graphene optical properties