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Study on the diffusion mechanism of graphene grown on copper pockets
Zhijuan Zhao1, Zhifa Shan, Cankun Zhang
1Department of Physics, State Key Laboratory of Physical Chemistry of Solid Surfaces, Xiamen University, Xiamen, Fujian, 361005, China.
Small (Weinheim an Der Bergstrasse, Germany)
|December 4, 2014
Abstract:
A correlation between graphene domains grown on the outer and the inner surfaces of Cu pockets is found, which discloses a new graphene growth mechanism based on the fast diffusion of carbon atoms through the 25 micro-meter-thick Cu foil, confirmed by isotopic labeling. Subsequently, on the outer surface of the Cu pocket, bilayer graphene with a coverage of about 78% is grown.
