Patent ID: 7678655

Claim:
A method for forming a field effect transistor device comprising: providing a semiconductor substrate; forming upon the semiconductor substrate a gate dielectric layer in turn having formed thereupon a gate electrode; forming within the semiconductor substrate a lightly doped extension region while employing the gate electrode as a mask; forming conformally upon the gate electrode a conformal spacer layer; forming within the semiconductor substrate a source/drain region while employing the gate electrode and the conformal spacer layer as a mask; forming upon the conformal spacer layer an additional spacer material layer; anisotropically etching the additional spacer material layer to form an anisotropically etched shaped spacer material layer adjoining the conformal spacer layer and exposing in part the source/drain region; isotropically etching the anisotropically etched shaped spacer material layer to further expose the source/drain region, wherein at least part of an upper sidewall of the gate electrode is exposed; and forming upon the further exposed source/drain region a silicide layer.