Patent ID: 6387749
Filing Date: 2002-05-14
Classification: C23C,H01L

Abstract:
A method of manufacturing a capacitor in a semiconductor device, the capacitor comprising a lower electrode, a first tantalum oxide film on top of the lower electrode, a second tantalum oxide film on top of the first tantalum oxide film, a tungsten oxy-nitride film on top of the second tantalum film and an upper electrode on the tungsten oxy-nitride film, the method comprising the steps of:forming a lower electrode on a semiconductor substrate; forming a first tantalum oxide film on said lower electrode; performing a plasma process on the first tantalum oxide film; forming a second tantalum oxide film on the first tantalum oxide film; forming a tantalum oxy-nitride film on the second tantalum oxide film; and forming an upper electrode on said tantalum oxy-nitride film.