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Study of supported CVD graphene irradiated by He and Au ions
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SYSNO ASEP 0517489 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Study of supported CVD graphene irradiated by He and Au ions Author(s) Malinský, Petr (UJF-V) RID, ORCID, SAI
Cutroneo, Mariapompea (UJF-V) ORCID, RID, SAI
Hnatowicz, Vladimír (UJF-V) RID
Stammers, James H. (UJF-V)
Luxa, J. (CZ)
Szokolova, K. (CZ)
Sofer, Z. (CZ)
Macková, Anna (UJF-V) RID, ORCID, SAINumber of authors 8 Article number 108952 Source Title Vacuum. - : Elsevier - ISSN 0042-207X
Roč. 170, č. 12 (2019)Number of pages 7 s. Publication form Print - P Action 17th Joint Vacuum Conference (JVC) Event date 10.09.2018 - 14.09.2018 VEvent location Olomouc Country CZ - Czech Republic Event type EUR Language eng - English Country GB - United Kingdom Keywords Graphene ; ion irradiation ; chemical properties ; electric properties Subject RIV BG - Nuclear, Atomic and Molecular Physics, Colliders OECD category Atomic, molecular and chemical physics (physics of atoms and molecules including collision, interaction with radiation, magnetic resonances, Mössbauer effect) R&D Projects GA16-05167S GA ČR - Czech Science Foundation (CSF) EF16_013/0001812 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) LM2015056 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) Method of publishing Limited access Institutional support UJF-V - RVO:61389005 UT WOS 000498325300004 EID SCOPUS 85072658708 DOI 10.1016/j.vacuum.2019.108952 Annotation In this work, a graphene monolayer deposited on the SiO2/Si substrate by means of Chemical Vapour Deposition (CVD) was irradiated using He and Au ions. The energy of used ions was 1.8 MeV and ion fluences varied in the range from 1.0 x 10(13) cm(-2) to 1.0 x 10(15) cm(-2). The different mass of Au and He ions leads to the significantly different electronic and nuclear stopping ratios and thus a difference in ion beam induced defects, of which the nature, size and density were estimated from the evolution of relative intensities of Raman lines. The chemical composition with possible oxidation of graphene layer and structural changes of the irradiated graphene were characterized by Attenuated Total Reflection - Fourier Transform Infrared (ATR-FTIR). The surface conductivity was measured by using standard two point method. The used ion irradiation leads to defect production in graphene structures whose density increases with increasing ion fluence and is significantly more pronounced for heavier gold ions. The graphene modification causes the slight conductivity decrease in the case of He irradiation in accordance with the observed structural degradation and significant decrease of graphene conductivity after Au irradiation. Workplace Nuclear Physics Institute Contact Markéta Sommerová, sommerova@ujf.cas.cz, Tel.: 266 173 228 Year of Publishing 2020 Electronic address https://doi.org/10.1016/j.vacuum.2019.108952
Number of the records: 1