Study of supported CVD graphene irradiated by He and Au ions

Kód výsledku v 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>

Nalezeny alternativní kódy

RIV/60461373:22310/19:43918153 RIV/44555601:13440/19:43894752

Výsledek na webu

<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>

Jazyk výsledku

angličtina

Název v původním jazyce

Study of supported CVD graphene irradiated by He and Au ions

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

Study of supported CVD graphene irradiated by He and Au ions

Popis výsledku anglicky

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.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10301 - Atomic, molecular and chemical physics (physics of atoms and molecules including collision, interaction with radiation, magnetic resonances, Mössbauer effect)

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2019

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Vacuum

ISSN

0042-207X

e-ISSN

—

Svazek periodika

170

Číslo periodika v rámci svazku

12

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

7

Strana od-do

108952

Kód UT WoS článku

000498325300004

EID výsledku v databázi Scopus

2-s2.0-85072658708