Device with scavenging spacer layer

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

Reexamination Certificate

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C438S261000, C438S287000, C257S410000, C257S295000

Reexamination Certificate

active

11320305

ABSTRACT:
Embodiments of the invention provide a device with a metal gate, a high-k gate dielectric layer and reduced oxidation of a substrate beneath the high-k gate dielectric layer. An oxygen-scavenging spacer layer on side walls of the high-k gate dielectric layer and metal gate may reduce such oxidation during high temperature processes.

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