Patent ID: 8907389
Filing Date: 2014-12-09
Classification: H01L

Abstract:
1. A semiconductor device, comprising: a ferroelectric film made of PZT by metal organic chemical vapor deposition; an electrode stacked on the ferroelectric film, a hydrogen barrier film covering the surfaces of the ferroelectric film and the electrode, the hydrogen barrier film having a generally uniform thickness; wherein an upper surface of the electrode lower layer has a morphology that is based on a morphology of an upper surface of the ferroelectric film; wherein the upper surface of the ferroelectric film and the upper surface of the electrode lower layer have a rough shape based on the morphology of the ferroelectric film; wherein the upper surface of the electrode upper layer is smoother than the upper surface of the ferroelectric film and the upper surface of the electrode lower layer; and wherein a flatness A of the upper surface of the electrode upper layer, a flatness B of the upper surface of the electrode lower layer, and a flatness C of the upper surface of the ferroelectric film satisfy the following: