Patent ID: 8865577

Claim:
A method for making an epitaxial structure, the method comprising: growing a buffer layer on an epitaxial growth surface of a substrate; fabricating a continuous graphene layer on the buffer layer; obtaining a patterned graphene layer by patterning the continuous graphene layer, wherein the patterning the continuous graphene layer comprises: making a patterned metal titanium layer by depositing metal titanium on a patterned carbon nanotube structure; forming a patterned titanium dioxide layer by oxidizing the patterned metal titanium layer; contacting the patterned titanium dioxide layer with the continuous graphene layer; irradiating the patterned titanium dioxide layer with ultraviolet light; and removing the patterned titanium dioxide layer; epitaxially growing an epitaxial layer on the buffer layer to obtain an epitaxial structure preform; and removing the substrate.