▎ 摘　　要

NOVELTY - The structure has a graphene layer formed on a substrate. A gallium nitride layer is formed on the graphene layer, where the gallium-nitride layer includes m-plane gallium nano-metal-oxide (GaN) crystals and c-plane GaN crystals that are formed on an upper surface and a lower surface of the substrate, respectively. The GaN crystal is grown in a plane direction from the surface of graphene layer. The graphene layer and theGaN layer are formed in the substrate. USE - Gallium nitride microstructure. ADVANTAGE - The microstructure reduces defects in the graphene layer, and is simple to process. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic diagram of the gallium nitride microstructure. 101Gallium nitride microstructure 110Substrate 120Graphene layer 130Gallium nitride layer