High-quality PVD graphene growth by fullerene decomposition on Cu foils

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388955%3A_____%2F17%3A00483656" target="_blank" >RIV/61388955:_____/17:00483656 - isvavai.cz</a>

Result on the web

<a href="http://dx.doi.org/10.1016/j.carbon.2017.04.067" target="_blank" >http://dx.doi.org/10.1016/j.carbon.2017.04.067</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.carbon.2017.04.067" target="_blank" >10.1016/j.carbon.2017.04.067</a>

Result language

angličtina

Original language name

High-quality PVD graphene growth by fullerene decomposition on Cu foils

Original language description

We present a new protocol to grow large-area, high-quality single-layer graphene on Cu foils at relatively low temperatures. We use C-60 molecules evaporated in ultra high vacuum conditions as carbon source. This clean environment results in a strong reduction of oxygen-containing groups as depicted by X-ray photoelectron spectroscopy (XPS). Unzipping of C-60 is thermally promoted by annealing the substrate at 800 degrees C during evaporation. The graphene layer extends over areas larger than the Cu crystallite size, although it is changing its orientation with respect to the surface in the wrinkles and grain boundaries, producing a modulated ring in the low energy electron diffraction (LEED) pattern. This protocol is a self-limiting process leading exclusively to one single graphene layer. Raman spectroscopy confirms the high quality of the grown graphene. This layer exhibits an unperturbed Dirac-cone with a clear n-doping of 0.77 eV, which is caused by the interaction between graphene and substrate. Density functional theory (DFT) calculations show that this interaction can be induced by a coupling between graphene and substrate at specific points of the structure leading to a local sp(3) configuration, which also contribute to the D-band in the Raman spectra. (C) 2017 Elsevier Ltd. All rights reserved.

Czech name

—

Czech description

—

Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

10403 - Physical chemistry

Project

<a href="/en/project/LL1301" target="_blank" >LL1301: From Graphene Hybrid Nanostructures to Green Electronics</a><br>

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2017

Confidentiality

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

Name of the periodical

Carbon

ISSN

0008-6223

e-ISSN

—

Volume of the periodical

119

Issue of the periodical within the volume

AUG 2017

Country of publishing house

US - UNITED STATES

Number of pages

9

Pages from-to

535-543

UT code for WoS article

000402713300065

EID of the result in the Scopus database

2-s2.0-85018772377