Invention Grant
US09105559B2 Conformal doping for FinFET devices 有权
FinFET器件的共形掺杂

Conformal doping for FinFET devices
Abstract:
A conformal doping process for FinFET devices on a semiconductor substrate which includes NFET fins and PFET fins. In a first exemplary embodiment, an N-type dopant composition is conformally deposited over the NFET fins and the PFET fins. The semiconductor substrate is annealed to drive in an N-type dopant from the N-type dopant composition into the NFET fins. A P-type dopant composition is conformally deposited over the NFET fins and the PFET fins. The semiconductor substrate is annealed to drive in a P-type dopant from the P-type dopant composition into the PFET fins. In a second exemplary embodiment, one of the NFET fins and PFET fins may be covered with a first dopant composition and then a second dopant composition may cover both the NFET fins and the PFET fins followed by an anneal to drive in both dopants.
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