Patent ID: 6875667
Filing Date: 2005-04-05
Classification: H01L

Abstract:
1. A method for forming a capacitor, comprising: (a) forming a lower electrode on a semiconductor substrate; (b) subjecting said substrate to an Atomic Layer Deposition (ALD) processing using a metal-containing organic compound containing one metal and an oxidizing agent to deposit a first metal oxide film on said lower electrode; (c) subjecting said substrate to heat treatment to be performed in an oxidizing ambient in order to remove residual carbon being retained in said first metal oxide film, resulting in formation of a first insulating film; (d) subjecting said substrate to an ALD processing using a metal-containing compound containing an alternative metal different from said one metal and an oxidizing agent to deposit a second metal oxide film on said first insulating film, resulting in formation of a second insulating film; and (e) forming an upper electrode on said second insulating film in order to form a capacitor including said lower electrode, first insulating film, second insulating film and upper electrode.