Abstract
Raman spectroscopic maps were used to study the local properties of graphene films as grown on corrugated copper foils, by chemical vapour deposition, and after transfer onto SiO2(300 nm)/Si substrates. Analysis of the Raman peaks show the films exhibit a striped periodic pattern of single- and bi-layer graphene. By performing simultaneous AFM-Raman line maps of the as grown film on Cu we find that the layer growth shows a strong correlation to substrate topography. As a result, compressively strained non-AB stacked bi-layer graphene forms preferentially along the ridges, whilst single-layer graphene grows inside the trenches, of the Cu foil topography. These experimental results suggest that surface mobility is not the dominating factor determining control of layer number in such growth regimes.
| Original language | English |
|---|---|
| Pages (from-to) | 7-12 |
| Number of pages | 6 |
| Journal | Carbon |
| Volume | 65 |
| DOIs | |
| Publication status | Published - Dec 2013 |
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ASJC Scopus subject areas
- Chemistry(all)
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Influence of Cu substrate topography on the growth morphology of chemical vapour deposited graphene. / Xiao, Ye; Kim, Hokwon; Mattevi, Cecilia; Chhowalla, Manish; Maher, Robert C.; Cohen, Lesley F.
In: Carbon, Vol. 65, 12.2013, p. 7-12.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Influence of Cu substrate topography on the growth morphology of chemical vapour deposited graphene
AU - Xiao, Ye
AU - Kim, Hokwon
AU - Mattevi, Cecilia
AU - Chhowalla, Manish
AU - Maher, Robert C.
AU - Cohen, Lesley F.
PY - 2013/12
Y1 - 2013/12
N2 - Raman spectroscopic maps were used to study the local properties of graphene films as grown on corrugated copper foils, by chemical vapour deposition, and after transfer onto SiO2(300 nm)/Si substrates. Analysis of the Raman peaks show the films exhibit a striped periodic pattern of single- and bi-layer graphene. By performing simultaneous AFM-Raman line maps of the as grown film on Cu we find that the layer growth shows a strong correlation to substrate topography. As a result, compressively strained non-AB stacked bi-layer graphene forms preferentially along the ridges, whilst single-layer graphene grows inside the trenches, of the Cu foil topography. These experimental results suggest that surface mobility is not the dominating factor determining control of layer number in such growth regimes.
AB - Raman spectroscopic maps were used to study the local properties of graphene films as grown on corrugated copper foils, by chemical vapour deposition, and after transfer onto SiO2(300 nm)/Si substrates. Analysis of the Raman peaks show the films exhibit a striped periodic pattern of single- and bi-layer graphene. By performing simultaneous AFM-Raman line maps of the as grown film on Cu we find that the layer growth shows a strong correlation to substrate topography. As a result, compressively strained non-AB stacked bi-layer graphene forms preferentially along the ridges, whilst single-layer graphene grows inside the trenches, of the Cu foil topography. These experimental results suggest that surface mobility is not the dominating factor determining control of layer number in such growth regimes.
UR - http://www.scopus.com/inward/record.url?scp=84884532865&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84884532865&partnerID=8YFLogxK
U2 - 10.1016/j.carbon.2013.06.090
DO - 10.1016/j.carbon.2013.06.090
M3 - Article
AN - SCOPUS:84884532865
VL - 65
SP - 7
EP - 12
JO - Carbon
JF - Carbon
SN - 0008-6223
ER -