Because of its high electrical conductivity as well as chemical and physical stability graphene-based films are expected to be utilized for transparent conductive films for next-generation electrical and optoelectronic devices and various other applications. Recently the synthesis methods of graphene by using thermal chemical vapor deposition (CVD) have been developed, in which large area graphene are synthesized on Ni or Cu substrates. In this thermal CVD, high temperature of 1000degC for the decomposition of CH4 and the duration of the order of hour are required.For the realization of graphene industries the fast synthesis methods at lower temperature are desirable.
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