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Oxidative-Etching-Assisted Synthesis of Centimeter-Sized Single-Crystalline Graphene
Wei Guo1, Feng Jing1, Jian Xiao1
1Key Laboratory of Material Chemistry for Energy Conversion and Storage, Minisrty of Education, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan, 430074, P. R. China.
Abstract:
Centimeter-sized single-crystalline graphene is obtained by an oxidative-etching-assisted chemical vapor deposition (CVD) method. Gaseous oxidants are found to be highly responsible for graphene etching. By diminishing the uncertain amount of H2 O vapor in commercial H2 and precisely introducing additional O2 , the graphene nucleation density can be well controlled.
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