Effects of Heat Treatment on Raman Spectra of Two-Layer 12C/13C Graphene

Result code in 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>

Result on the web

<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>

Result language

angličtina

Original language name

Effects of Heat Treatment on Raman Spectra of Two-Layer 12C/13C Graphene

Original language description

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

Czech name

—

Czech description

—

Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

CG - Electrochemistry

OECD FORD branch

—

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)<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2012

Confidentiality

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

Name of the periodical

Chemistry - A European Journal

ISSN

0947-6539

e-ISSN

—

Volume of the periodical

18

Issue of the periodical within the volume

43

Country of publishing house

DE - GERMANY

Number of pages

8

Pages from-to

13877-13884

UT code for WoS article

000310066700039

EID of the result in the Scopus database

—