Detailed Information

Cited 2 time in webofscience Cited 2 time in scopus
Metadata Downloads

Fast synthesis of large-scale single-crystal graphene with well-defined edges upon sodium chloride addition

Authors
Kim, Su HanJiang, JieJang, SuheeLee, Jae HyungYang, Dong WonChang, Won JunShin, Jae HyeokOh, NuriKim, JaeyongPachter, RuthPark, Won Il
Issue Date
Mar-2020
Publisher
PERGAMON-ELSEVIER SCIENCE LTD
Citation
CARBON, v.158, pp.904 - 911
Indexed
SCIE
SCOPUS
Journal Title
CARBON
Volume
158
Start Page
904
End Page
911
URI
https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/10596
DOI
10.1016/j.carbon.2019.11.080
ISSN
0008-6223
Abstract
There have been many efforts to grow high-quality, single-crystalline graphene on a cheap substrate, such as a metal foil. However, control of nucleation and growth of individual flakes, as well as their seamless stitching, remains elusive. Here we demonstrate a new strategy to fast and facile synthesis of large scale single-crystal graphene on copper foil. Polycrystalline Cu foils were first converted to single-crystal Cu foils through high-temperature annealing processes. Then, a sodium chloride (NaCl) additive was introduced during chemical vapor deposition growth of graphene on the Cu foils. Investigation of early stage growth in this process suggests that the NaCl additive enhances nucleation events and depresses dendritic growth, producing high-density graphene flakes (GFs) with crystallographically well-defined edges: (i) rectangular-shaped GFs on Cu(100) and (ii) hexagonal-shaped GFs on Cu(111). Density functional theory calculations show that NaCl can assist in the elimination of remnant oxygen atoms on the Cu surface and promote epitaxial interactions between Cu and graphene. This behavior was further exploited to achieve large-scale single-crystal graphene through epitaxial, seamless stitching of hexagonal GFs within 90 s.
Files in This Item
Go to Link
Appears in
Collections
서울 자연과학대학 > 서울 물리학과 > 1. Journal Articles
서울 공과대학 > 서울 신소재공학부 > 1. Journal Articles

qrcode

Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.

Related Researcher

Researcher Park, Won Il photo

Park, Won Il
COLLEGE OF ENGINEERING (SCHOOL OF MATERIALS SCIENCE AND ENGINEERING)
Read more

Altmetrics

Total Views & Downloads

BROWSE