Patent ID: 7217971

Claim:
A semiconductor device comprising: a silicon substrate; gate dielectric films formed on a major surface of said silicon substrate and comprising mainly an insulating material with a higher dielectric constant than SiO 2 material; gate electrode films formed on said gate dielectric films; diffusion layers containing an additional element and formed on said silicon substrate; and a capacitor element formed over said silicon substrate and electrically connected to said diffusion layers, said capacitor comprising first and second electrodes and a dielectric layer disposed between said first and second electrodes, at least one of said first electrode or said second electrode comprising silicon film having (111) crystal orientation, said dielectric layer comprising mostly of zirconium oxide or hafnium oxide; said major surface being formed so as to be (111) crystal face of the substrate, wherein said gate dielectric films comprise mostly of zirconium oxide, and the gate electrode films are formed in contact with said gate dielectric films, wherein said gate electrode films are mostly composed of cobalt silicide or silicon, wherein said gate dielectric films further comprise hafnium in a concentration of from 0.01 at. % inclusive to 15 at. % inclusive.