Patent ID: 8344434
Filing Date: 2013-01-01
Classification: H01L

Abstract:
1. A semiconductor device, comprising: a semiconductor substrate; an interlayer insulating film formed over the semiconductor substrate; and a capacitor formed on the interlayer insulating film, wherein the capacitor including a lower electrode, a capacitor dielectric film made of a ferroelectric material, and an upper electrode, wherein the capacitor dielectric film includes a first ferroelectric film and a second ferroelectric film formed on the first ferroelectric film, wherein the first ferroelectric film includes a first film and a second film formed on the first film, the second film being thinner than the first film and burying an unevenness of an upper surface of the first film, and wherein the second ferroelectric film being doped with an additive element and being thinner than the first ferroelectric film.