Patent ID: 8129205

Claim:
A method for processing a silicon substrate, comprising: applying an anisotropic etchant to a surface of the silicon substrate, the silicon substrate having a Si(1,0,0) lattice orientation at the surface; forming an indentation on the surface of the silicon substrate with the applied anisotropic etchant, the indentation being defined by at least one plane with a Si(1,1,1) lattice orientation; and forming a light emitting diode structure on the at least one plane with the Si(1,1,1) lattice orientation of the indentation, wherein forming the light emitting diode structure includes depositing an N-type gallium nitride (GaN) material, an indium gallium nitride (InGaN) material, and a P-type GaN material on the first and second Si(1,1,1) planes in sequence and coalescing at least one of the N-type GaN, InGaN, and P-type GaN materials during deposition, and wherein the coalescing reduces a dislocation density in at least one of the N-type GaN, InGaN, and P-type GaN materials.