Patent ID: 8859308

Claim:
A method for making a light emitting diode comprising: providing a substrate having an epitaxial growth surface; growing a first semiconductor layer on the epitaxial growth surface, an active layer on a surface of the first semiconductor layer, and a second semiconductor layer on a surface of the active layer in series, wherein the first semiconductor layer, the active layer, and the second semiconductor layer cooperatively constitutes a source layer; forming a metallic plasma generating layer on a surface of the source layer away from the substrate; disposing a first optical symmetric layer on a surface of the metallic plasma generating layer away from the substrate, wherein a refractive index difference between the first optical symmetric layer and the source layer is less than or equal to 0.3; exposing the first semiconductor layer by removing the substrate; and applying a first electrode on an exposed surface of the first semiconductor layer, and applying a second electrode electrically connected with the second semiconductor layer.