Patent ID: 8268646

Claim:
A method for forming highly textured group III-nitride layers, comprising the steps of: providing a single crystal silicon comprising substrate; depositing a nanostructured In x Ga 1-x N (1≧x≧0) interlayer on said silicon substrate, the nanostructured In x Ga 1-x N interlayer being directly disposed on the silicon substrate and being in contact with said silicon substrate; a surface of the substrate that contacts the nanostructured interlayer being flat; and depositing a highly textured group III-nitride layer on said interlayer, wherein said interlayer has a nano indentation hardness that is less than both said silicon substrate and said highly textured group III-nitride layer; wherein said interlayer comprises a columnar film or nanorods having average rod diameters of 300 to 700 nm.