Patent ID: 7439123
Filing Date: 2008-10-21
Classification: H01L

Abstract:
1. A method for making a semiconductor device structure, comprising: producing a substrate having formed thereon a first gate with spacers, a second gate with spacers, respective source and drain regions adjacent to the first gate and the second gate, and an isolation region disposed intermediate of the first gate and the second gate; disposing a first metallic layer on the gates with spacers, source and drain regions, and the isolation region; disposing a second metallic layer on the first metallic layer; covering the second metallic layer to at least a first extent disposed over the first gate with spacers; doping the first metallic layer with a first dopant through a portion of the second metallic layer disposed over the second gate with spacers; uncovering the at least a first extent of the second metallic layer; covering the second metallic layer to at least a second extent disposed over the second gate with spacers; doping the first metallic layer with a second dopant through a portion of the second metallic layer disposed over the first gate with spacers; uncovering the at least a second extent of the second metallic layer; and