Patent ID: 8466018
Filing Date: 2013-06-18
Classification: H01L

Abstract:
1. A method of forming a PMOS device and an NMOS device in and above a PMOS region and an NMOS region, respectively, of a semiconducting substrate, the method comprising: forming extension implant regions in said PMOS region and said NMOS region of said semiconducting substrate for said PMOS device and said NMOS device, respectively; after forming said extension implant regions, performing a first heating process; forming a plurality of cavities in said PMOS region of said substrate; performing at least one epitaxial deposition process to form a plurality of in-situ doped semiconductor layers that are positioned in or above each of said cavities; forming a masking layer that exposes said NMOS region and covers said PMOS region; after forming said plurality of said in-situ doped semiconductor layers, forming source/drain implant regions in said NMOS region of said substrate for said NMOS device; and after forming said source/drain implant regions in said NMOS region, performing a second heating process.