Patent ID: 8101508
Filing Date: 2012-01-24
Classification: C30B,H01L

Abstract:
1. A method of manufacturing a first silicon substrate, comprising: a preparation step of growing a single crystal silicon that is doped with phosphorus (P) and has a carbon concentration that is greater than or equal to 1.0×10 a step of forming an n+ epitaxial layer that is doped with phosphorus (P) at a concentration greater than or equal to 1.0×10 a step of forming a n epitaxial layer that is doped with phosphorus (P) at a concentration greater than or equal to 1.0×10 wherein the thickness of the n+ epitaxial layer is greater than or equal to 0.2 μm and less than or equal to 0.6 μm, and the thickness of the n epitaxial layer is greater than or equal to 2 μm and less than or equal to 10 μm.