Patent ID: 8198685

Claim:
A semiconductor device comprising: at least one first gate dielectric layer over a substrate; a first transition-metal oxycarbide (MC x O y ) containing layer over the at least one first gate dielectric layer, wherein the transition-metal (M) has an atomic percentage of about 40 at.% or more; a first gate over the first transition-metal oxycarbide containing layer; at least one first doped region within the substrate and adjacent to a sidewall of the first gate; at least one second gate dielectric layer over the substrate; a p-type metal containing layer over the at least one second gate dielectric layer; a second transition-metal oxycarbide (MC x O y ) containing layer over the p-type metal containing layer, wherein the transition-metal (M) has an atomic percentage of about 40 at.% or more; a second gate over the second transition-metal oxycarbide containing layer; and at least one second doped region within the substrate and adjacent to a sidewall of the first gate, wherein the first gate is a gate of a n-type transistor and second gate is a gate of a p-type transistor.