Patent ID: 6080594
Filing Date: 2000-06-27
Classification: H01L

Abstract:
A method for fabricating a capacitor of a semiconductor device, the method comprising the steps of:preparing a semiconductor substrate;forming an insulating layer on said semiconductor substrate;forming a contact hole by selectively eliminating said lower insulating layer, said contact hole exposing and said semiconductor substrate;forming a plug in said contact hole;forming a titanium/titanium nitride film and a ruthenium film on said plug and said lower insulating layer;eliminating selectively said ruthenium film and said titanium/titanium nitride film;forming a ruthenium oxide film on said ruthenium film selectively eliminated; andforming a dielectric film having a high specific dielectric constant, on an exposed surface of said ruthenium oxide film, said titanium/titanium nitride film, and said lower insulating layer, and then forming an upper electrode on the dielectric film.