EPR and Impedance Measurements of Graphene Oxide and Reduced Graphene Oxide |
| M. Kempińskia,b, S. Łoś c, P. Florczak b, W. Kempiński c and S. Jurgaa,b
aFaculty of Physics, Adam Mickiewicz University, Umultowska 85, 61-614 Poznań, Poland bNanoBioMedical Centre, Adam Mickiewicz University, Umultowska 85, 61-614 Poznań, Poland cInstitute of Molecular Physics, Polish Academy of Sciences, M. Smoluchowskiego 17, 60-179 Poznań, Poland |
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| We report the observations of electron paramagnetic resonance and impedance measurements of graphene oxide and reduced graphene oxide performed in the wide temperature range in order to get insight into the electronic properties of graphene-based materials and the role of oxygen functionalities in the charge carrier transport phenomena. In such systems the strong spin localization, hopping charge carrier transport as well as the formation of adsorption layers are observed, all the phenomena changing significantly after the heavily oxidized graphene is reduced. |
DOI: 10.12693/APhysPolA.132.81 PACS numbers: 72.80.Vp, 76.30.-v |