▎ 摘　　要

NOVELTY - A graphene substrate comprises a graphene layer structure is provided directly on a metal oxide layer and the metal oxide layer is provided directly on a support layer. The metal oxide layer has a thickness of less than 5 nm and is selected from aluminum oxide, hafnium oxide, magnesium oxide, magnesium aluminate, tantalum pentoxide, yttrium oxide, zirconium dioxide and yttria-stabilized zirconia, and the support layer is boron nitride, aluminum nitride, gallium nitride, silicon carbide and/or diamond. USE - Graphene substrate for electrical device (claimed) such as electro-optic modulator, transistor e.g. radio frequency graphene field effect transistors and biosensor e.g. Flail effect sensor. ADVANTAGE - The graphene substrate has improved electronic properties, and high-quality graphene with excellent uniformity and constant number of layers across its whole area on the substrate without additional carbon fragments or islands. The method is more reliable and more efficient for the industrial manufacture of graphene, particularly large area graphene on non-metallic substrates. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for formation of graphene substrate.