Investigation on photoluminescence emission of (reduced) graphene oxide paper

In order to contrastively investigate optical properties of graphene oxide (GO) and reduced graphene oxide (rGO) paper, GO is prepared by improved Hummer method and controlled reduced using hydration hydrazine to obtain good dispersive rGO in organic solvent. Finally, GO and rGO paper are obtained b...

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Bibliographic Details
Published in:IOP conference series. Materials Science and Engineering 2018-01, Vol.292 (1), p.12097
Main Authors: Ding, J J, Chen, H X, Feng, D Q, Fu, H W
Format: Article
Language:English
Subjects:
Emission analysis
Emissions control
Graphene
Hydrazines
Morphology
Optical properties
Photoluminescence
Raman spectra
Vacuum filtration
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Summary:In order to contrastively investigate optical properties of graphene oxide (GO) and reduced graphene oxide (rGO) paper, GO is prepared by improved Hummer method and controlled reduced using hydration hydrazine to obtain good dispersive rGO in organic solvent. Finally, GO and rGO paper are obtained by vacuum filtration method. Samples morphology and optical properties are analyzed by scanning electron microscopy (SEM) images, Raman spectra, absorbance spectra and photoluminescence (PL) spectra. Results indicate that there are large numbers of localized states in both GO and rGO paper, and optical gaps of two samples are 0.62 eV. In PL spectra of GO paper, we observe three emission peaks at 565, 578 and 608 nm, respectively whose intensity decreases evidently after reduced, which is due to the decrease of oxide functionalized groups and expansion of sp2 clusters. PL emission will gradually decrease during GO are reduced.
ISSN:1757-8981
1757-899X
DOI:10.1088/1757-899X/292/1/012097