Patent ID: 8936977
Filing Date: 2015-01-20
Classification: H01L

Abstract:
1. A method comprising: forming first and second high-k metal gate (HKMG) gate stacks on a substrate; forming a nitride liner and oxide spacers on each side of each of the first and second HKMG gate stacks, such that the nitride liner is in direct contact with the first and second HKMG gate stacks; performing halo/extension implants at each side of each of the first and second HKMG gate stacks; forming an oxide liner and nitride spacers on the oxide spacers of each of the first and second HKMG gate stacks; forming deep source/drain regions at opposite sides of the second HKMG gate stack; forming an oxide hardmask over the second HKMG gate stack; forming embedded silicon germanium (eSiGe) at opposite sides of the first HKMG gate stack; and removing the oxide hardmask.