Patent ID: 6916694
Filing Date: 2005-07-12
Classification: H01L,Y10S

Abstract:
1. A method of forming a MOSFET device comprising the steps of: providing a structure comprising a dummy gate that has an upper surface that is coplanar with an upper surface of an oxide layer, said dummy gate is located on a sacrificial oxide that is positioned atop a Si-containing substrate; removing the dummy gate to provide a gate opening that exposes a portion of the sacrificial oxide, said gate opening defining a device channel in said Si-containing substrate; removing the exposed portion of the sacrificial oxide in the gate opening; forming a gate dielectric and amorphous Si gate in said gate opening; implanting dopants in said amorphous Si gate and annealing the dopants in said amorphous Si gate to convert said amorphous Si gate into a polySi gate, while introducing localized strain to said device channel; and removing the oxide layer and forming source/drain junctions in portions of the Si-containing substrate that adjoin the localized strained device channel.