Study of supported CVD graphene irradiated by He and Au ions

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389005%3A_____%2F19%3A00517489" target="_blank" >RIV/61389005:_____/19:00517489 - isvavai.cz</a>
Alternative codes found
RIV/60461373:22310/19:43918153 RIV/44555601:13440/19:43894752
Result on the web
<a href="https://doi.org/10.1016/j.vacuum.2019.108952" target="_blank" >https://doi.org/10.1016/j.vacuum.2019.108952</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.vacuum.2019.108952" target="_blank" >10.1016/j.vacuum.2019.108952</a>

Result language
angličtina
Original language name
Study of supported CVD graphene irradiated by He and Au ions
Original language description
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.
Czech name
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Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10301 - Atomic, molecular and chemical physics (physics of atoms and molecules including collision, interaction with radiation, magnetic resonances, Mössbauer effect)

Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2019
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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