Controllable synthesis of submillimeter single-crystal monolayer graphene domains on copper foils by suppressing nucleation.
Submillimeter single-crystal monolayer and multilayer graphene domains were prepared by an atmospheric pressure chemical vapor deposition method with suppressing nucleation on copper foils through an annealing procedure. A facile oxidation visualization method was applied to study the nucleation density and morphology of graphene domains on copper foils. Scanning electron microscopy, transmission electron microscopy, atomic force microscopy, polarized optical microscopy, and Raman spectra showed that the submillimeter graphene domains were monolayer single crystals.
Hefei National Laboratory for Physical Sciences at Microscale, and Department of Physics, University of Science and Technology of China, Hefei, Anhui, 230026, PR China.
Hong
H
Wang
Guanzhong
G
Wang
Pengfei
P
Bao
Shaolin
S
Yang
Wei
W
Zhu
Xing
X
Xie
Wen-Jun
WJ
Zhang