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Graphene oxide (GO) and reduced graphene oxide (rGO) films were formed by ultrasonic spray coating method and were studied by micro-Raman spectroscopy (mRS), current-voltage characteristics and impedance spectroscopy. Raman spectra of GO and rGO films shows two typical peaks, with maxima at ∼1350 cm-1 and ∼1590 cm-1 (D and G bands). One semicircle on the Nyquist curve of gold/graphene oxide/gold structure suggests the existence of homogeneous regions. Adsorption of ethanol, acetone and isopropyl vapors changes electrical conductivity of graphene oxide films in different way. The sensing mechanisms to the organic vapors are discussed.

Influence of Gas Adsorption on the Impedance of Graphene Oxide / Milovanov, Y. S.; Skryshevsky, V. A.; Slobodian, O. M.; Pustovyi, D. O.; Tang, X.; Raskin, J. -P.; Nazarov, A. N.. - (2019), pp. 155-158. (Intervento presentato al convegno 39th IEEE International Conference on Electronics and Nanotechnology, ELNANO 2019 tenutosi a ukr nel 16-18 April 2019) [10.1109/ELNANO.2019.8783946].

Influence of Gas Adsorption on the Impedance of Graphene Oxide

Milovanov Y. S.;Tang X.;
2019

Abstract

Graphene oxide (GO) and reduced graphene oxide (rGO) films were formed by ultrasonic spray coating method and were studied by micro-Raman spectroscopy (mRS), current-voltage characteristics and impedance spectroscopy. Raman spectra of GO and rGO films shows two typical peaks, with maxima at ∼1350 cm-1 and ∼1590 cm-1 (D and G bands). One semicircle on the Nyquist curve of gold/graphene oxide/gold structure suggests the existence of homogeneous regions. Adsorption of ethanol, acetone and isopropyl vapors changes electrical conductivity of graphene oxide films in different way. The sensing mechanisms to the organic vapors are discussed.
2019
9781728120652
4.1 Contributo in Atti di convegno
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11583/3004296