Triangular Graphene Grain Growth on Cube-textured Cu Substrates

Abstract

The growth of graphene has been carried out on cube-textured (100) oriented Cu (CTO-Cu) foils using chemical vapor deposition (CVD). Well-aligned triangles, self-assembled on CTO-Cu during CVD heating in flowing hydrogen on many grains. The nucleation of triangular graphene grains has been confirmed. This demonstrates that the shape and possibily alignment of the graphene grains can potentially be tuned by changing the properties of the substrate, which should ultimately lead to improved electrical properties of the graphene. This type of graphene nucleation and alignment is novel and has not been observed in previous studies on other copper foil samples.