Patent ID: 6383950
Filing Date: 2002-05-07
Classification: H01L

Abstract:
A method for forming an insulating and capping structure of an integrated circuit on a semiconductor wafer, the method including the steps of:A. forming an insulating layer on said semiconductor wafer, wherein said insulating layer is comprised of a dielectric material having a low dielectric constant that is less than about 4.0 and having chemical bonds that are chemically reactive with a predetermined reactant; B. forming a reaction barrier layer on said insulating layer, wherein said reaction barrier layer is comprised of a material that is not chemically reactive with said predetermined reactant; and C. forming a capping layer on said reaction barrier layer, wherein said capping layer is formed using said predetermined reactant; and wherein said reaction barrier layer prevents contact of said predetermined reactant with said insulating layer to prevent reaction of said predetermined reactant with said chemical bonds of said dielectric material of said insulating layer that are chemically reactive with said predetermined reactant such that the low dielectric constant of said dielectric material of said insulating layer is not increased by said formation of said capping layer.