Epitaxial silicon germanium for reduced contact resistance...

Semiconductor device manufacturing: process – Making field effect device having pair of active regions... – Having insulated gate

Reexamination Certificate

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C438S197000, C438S514000, C438S517000, C438S524000

Reexamination Certificate

active

07851291

ABSTRACT:
A method for selectively relieving channel stress for n-channel transistors with recessed, epitaxial SiGe source and drain regions is described. This increases the electron mobility for the n-channel transistors without affecting the strain in p-channel transistors. The SiGe provides lower resistance when a silicide is formed.

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