Effects of Heat Treatment on Raman Spectra of Two-Layer 12C/13C Graphene
Identifikátory výsledku
Kód výsledku v IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388955%3A_____%2F12%3A00384498" target="_blank" >RIV/61388955:_____/12:00384498 - isvavai.cz</a>
Výsledek na webu
<a href="http://dx.doi.org/10.1002/chem.201202114" target="_blank" >http://dx.doi.org/10.1002/chem.201202114</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1002/chem.201202114" target="_blank" >10.1002/chem.201202114</a>
Alternativní jazyky
Jazyk výsledku
angličtina
Název v původním jazyce
Effects of Heat Treatment on Raman Spectra of Two-Layer 12C/13C Graphene
Popis výsledku v původním jazyce
The Raman spectra of two-layered graphene on a silicon substrate were studied in the temperature range from 298 to 1073 K in an inert atmosphere. Isotopic engineering was used to fabricate two-layer graphene specimens containing 13C atoms in the top layer and 12C atoms in the bottom layer, which allowed the behavior of each particular layer to be distinguished as a function of temperature. It is demonstrated that the top layer exhibits much lower Raman temperature coefficients than the bottom one for both the G and the G' modes. We suggest that the changes in the Raman spectra of graphene observed during thermal cycling are predominantly caused by a superposition of two effects, namely, the mechanical stress in graphene exerted by the substrate and theintrinsic changes in the graphene lattice caused by the temperature itself. The top graphene layer is proposed to be more relaxed than the bottom graphene layer and thus reflects almost exclusively the temperature variations as a freesta
Název v anglickém jazyce
Effects of Heat Treatment on Raman Spectra of Two-Layer 12C/13C Graphene
Popis výsledku anglicky
The Raman spectra of two-layered graphene on a silicon substrate were studied in the temperature range from 298 to 1073 K in an inert atmosphere. Isotopic engineering was used to fabricate two-layer graphene specimens containing 13C atoms in the top layer and 12C atoms in the bottom layer, which allowed the behavior of each particular layer to be distinguished as a function of temperature. It is demonstrated that the top layer exhibits much lower Raman temperature coefficients than the bottom one for both the G and the G' modes. We suggest that the changes in the Raman spectra of graphene observed during thermal cycling are predominantly caused by a superposition of two effects, namely, the mechanical stress in graphene exerted by the substrate and theintrinsic changes in the graphene lattice caused by the temperature itself. The top graphene layer is proposed to be more relaxed than the bottom graphene layer and thus reflects almost exclusively the temperature variations as a freesta
Klasifikace
Druh
J<sub>x</sub> - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)
CEP obor
CG - Elektrochemie
OECD FORD obor
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Návaznosti výsledku
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)<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Ostatní
Rok uplatnění
2012
Kód důvěrnosti údajů
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Údaje specifické pro druh výsledku
Název periodika
Chemistry - A European Journal
ISSN
0947-6539
e-ISSN
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Svazek periodika
18
Číslo periodika v rámci svazku
43
Stát vydavatele periodika
DE - Spolková republika Německo
Počet stran výsledku
8
Strana od-do
13877-13884
Kód UT WoS článku
000310066700039
EID výsledku v databázi Scopus
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