Thermally induced mechanical strain of graphene on copper and other substrates

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388955%3A_____%2F23%3A00571143" target="_blank" >RIV/61388955:_____/23:00571143 - isvavai.cz</a>

Výsledek na webu

<a href="https://hdl.handle.net/11104/0342435" target="_blank" >https://hdl.handle.net/11104/0342435</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.jpcs.2023.111371" target="_blank" >10.1016/j.jpcs.2023.111371</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Thermally induced mechanical strain of graphene on copper and other substrates

Popis výsledku v původním jazyce

Raman spectroscopy is employed to investigate the temperature dependence of the phonon frequencies of the G and 2D modes of monolayer graphene grown on copper foil by chemical vapor deposition. Both the G and 2D modes exhibit significant red shift as temperature increases, and the extracted values of the temperature coefficients of the G and 2D modes are about −0.07 cm−1K−1 and −0.15 cm−1K−1, respectively. In addition, we extracted the intrinsic Raman shift of the G mode by determining the thermally induced mechanical strain that is transmitted from the copper substrate to graphene. The extracted intrinsic G mode frequency shift is in very good agreement with earlier reported first principles calculations. Finally, we have calculated the temperature dependence of the substrate-induced strain on graphene when it is deposited or grown to various technologically important substrates, showing that strains as high as 1.1% can be imparted to graphene within a temperature range of 500 K.

Název v anglickém jazyce

Thermally induced mechanical strain of graphene on copper and other substrates

Popis výsledku anglicky

Raman spectroscopy is employed to investigate the temperature dependence of the phonon frequencies of the G and 2D modes of monolayer graphene grown on copper foil by chemical vapor deposition. Both the G and 2D modes exhibit significant red shift as temperature increases, and the extracted values of the temperature coefficients of the G and 2D modes are about −0.07 cm−1K−1 and −0.15 cm−1K−1, respectively. In addition, we extracted the intrinsic Raman shift of the G mode by determining the thermally induced mechanical strain that is transmitted from the copper substrate to graphene. The extracted intrinsic G mode frequency shift is in very good agreement with earlier reported first principles calculations. Finally, we have calculated the temperature dependence of the substrate-induced strain on graphene when it is deposited or grown to various technologically important substrates, showing that strains as high as 1.1% can be imparted to graphene within a temperature range of 500 K.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10403 - Physical chemistry

Projekt

<a href="/cs/project/GX20-08633X" target="_blank" >GX20-08633X: ÅrchitektRonika dvoudimenzionálních krystalů se synergií chirálních elektrochemických a optoelektronických konceptů na Å- škále</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2023

Kód důvěrnosti údajů

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

Název periodika

Journal of Physics and Chemistry of Solids

ISSN

0022-3697

e-ISSN

1879-2553

Svazek periodika

179

Číslo periodika v rámci svazku

AUG 2023

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

6

Strana od-do

111371

Kód UT WoS článku

000987918300001

EID výsledku v databázi Scopus

2-s2.0-85153259659