TY - JOUR
T1 - Crystallographic orientation of early domains in CVD graphene studied by Raman spectroscopy
AU - Jegal, Seonyoung
AU - Hao, Yufeng
AU - Yoon, Duhee
AU - Ruoff, Rodney S.
AU - Yun, Hoyeol
AU - Lee, Sang Wook
AU - Cheong, Hyeonsik
N1 - Funding Information:
This work was supported by the National Research Foundation (NRF) of Korea grant funded by the Ministry of Education, Science and Technology (MEST) of Korea (Nos. 2011-0017605 and 2012R1A2A2A01045496 ), WCU program (R31-2008-000-10057-0), a grant (No. 2011-0031630) from the Center for Advanced Soft Electronics under the Global Frontier Research Program of the MEST, and the Sogang University Research Grant of 201214003. Y.F.H. and R.S.R. gratefully acknowledge support from the Office of Naval Research and SWAN NRI.
PY - 2013/5/1
Y1 - 2013/5/1
N2 - Crystallographic orientations of early multi-lobe graphene domains in CVD-grown graphene are investigated. Partially grown graphene domains were transferred onto flexible substrates and uniaxial tensile strain was applied. From the polarization dependence of the Raman G band, split due to strain, the crystallographic orientation was determined. It was found that there are some single crystal domains. However, lobes have different orientations in some other multi-lobe domains. Within a given lobe, the orientation does not change as the domain grows, indicating that the orientations present in a graphene domain are determined at an early stage of growth.
AB - Crystallographic orientations of early multi-lobe graphene domains in CVD-grown graphene are investigated. Partially grown graphene domains were transferred onto flexible substrates and uniaxial tensile strain was applied. From the polarization dependence of the Raman G band, split due to strain, the crystallographic orientation was determined. It was found that there are some single crystal domains. However, lobes have different orientations in some other multi-lobe domains. Within a given lobe, the orientation does not change as the domain grows, indicating that the orientations present in a graphene domain are determined at an early stage of growth.
UR - http://www.scopus.com/inward/record.url?scp=84876408101&partnerID=8YFLogxK
U2 - 10.1016/j.cplett.2013.03.043
DO - 10.1016/j.cplett.2013.03.043
M3 - Article
AN - SCOPUS:84876408101
SN - 0009-2614
VL - 568-569
SP - 146
EP - 150
JO - Chemical Physics Letters
JF - Chemical Physics Letters
ER -