Patent ID: 8357583
Filing Date: 2013-01-22
Classification: H01L

Abstract:
1. A method for manufacturing a semiconductor device including a formation of a capacitor, the formation of the capacitor comprising: forming a lower electrode comprising titanium nitride on a semiconductor substrate; forming a dielectric film comprising zirconium oxide as a primary constituent on said lower electrode; forming a first protective film comprising a titanium compound on said dielectric film; and forming an upper electrode comprising titanium nitride on said first protective film, wherein said forming a dielectric film is an operation of forming a dielectric film including at least a stacked structure of a first dielectric film comprising a zirconium oxide film, a second dielectric film comprising an amorphous aluminum oxide film on said first dielectric film, and a third dielectric film comprising a zirconium oxide film on said second dielectric film, wherein said third dielectric film is formed by an atomic layer deposition (ALD) method, and wherein said first protective film comprises a titanium compound and is formed on said third dielectric film without exceeding the film forming temperature of said third dielectric film over 70° C.