Graphene oxide layers modified by irradiation with 1.0 MeV Au+ ions

0496728 - ÚJF 2019 RIV US eng J - Journal Article
Malinský, Petr - Cutroneo, Mariapompea - Macková, Anna - Hnatowicz, Vladimír - Szokolova, K. - Boháčová, M. - Luxa, J. - Sofer, Z.
Graphene oxide layers modified by irradiation with 1.0 MeV Au+ ions.
Surface and Interface Analysis. Roč. 50, č. 11 (2018), s. 1110-1115. ISSN 0142-2421. E-ISSN 1096-9918.
[17th European Conference on Applications of Surface and Interface Analysis (ECASIA 2017). Monpellier, 24.09.2017-29.09.2017]
R&D Projects: GA ČR GA16-05167S; GA MŠMT EF16_013/0001812; GA MŠMT LM2015056
Institutional support: RVO:61389005
Keywords : chemical properties * electrical properties * graphene oxide * ion irradiation
OECD category: Nuclear physics
Impact factor: 1.319, year: 2018

Graphene oxide (GO) foils were modified by irradiation using 1.0 MeV Au+ ions, and their elemental composition before and after the ion irradiation was investigated using Rutherford back-scattering spectroscopy (RBS). The surface morphology was studied using SEM, and changes in elemental composition and structure of GO in shallow subsurface were characterized by various spectroscopy techniques including X-ray photoelectron spectroscopy and Raman spectroscopy. Electrical properties were determined using standard 2-point method. The analyses indicate that the Au irradiation up to 1.0 x 10(15) cm(-1) results in removal of oxygen functionalities and growth of graphene domains, leading to a surface conductivity increase dependent on the applied ion fluence. The Au irradiation with excessive ion fluencies leads to the amorphization of GO foil structure.
Permanent Link: http://hdl.handle.net/11104/0289381