Patent ID: 7098095
Filing Date: 2006-08-29
Classification: H01L

Abstract:
1. A method of forming a MOS transistor on a semiconductor material of a first conductivity type, the semiconductor material having a top surface, the method comprising: forming a first material over the top surface of the semiconductor material; exposing a region of the top surface of the semiconductor material, a portion of the first material being removed and a remaining portion of the first material being left when exposing the region of the top surface of the semiconductor material; forming a semiconductor layer of the first conductivity type on the top surface of the semiconductor material, the semiconductor layer including silicon, germanium, and carbon; removing the remaining portion of the first material from over the top surface of the semiconductor material; forming a layer of insulation material over the semiconductor layer; forming a layer of conductive material on the layer of insulation material; and removing a portion of the layer of conductive material to form a conductive gate that lies over the semiconductor layer.