Patent ID: 8465588
Filing Date: 2013-06-18
Classification: C30B,H01L,Y10T

Abstract:
1. A method of fabricating crystalline material comprising: providing a crystalline substrate having a first surface and a second opposite surface; forming a first layer of crystalline material containing at least a Group III element and N having a first thickness overlying the first surface of the substrate; and forming a second layer of crystalline material overlying the second surface of the substrate, the second crystalline material having substantially the same first thickness and having substantially the same composition as the first layer of crystalline material, such that the first crystalline material and second crystalline material are substantially free from bow; wherein the first layer is formed by a process selected from MOCVD, HVPE, LPE, and MBE; and the second layer is formed by a process selected from MOCVD, HVPE, LPE, and MBE.