Patent ID: 6635939
Filing Date: 2003-10-21
Classification: H01L

Abstract:
An integrated circuit structure comprising:a dielectric layer; a conductive layer above the dielectric layer wherein the conductive layer has at least some fluorine atoms or ions therein; a TiNxBy barrier layer between the conductive layer and the dielectric layer, wherein the TiNxBy barrier layer is formed from a TiN layer treated at an elevated temperature with a boron-containing gas, wherein the x-factor is in the range of about 0.2 to 0.499 and the y-factor is in the range of about 0.01 to 10; and a polysilicon layer overlying the dielectric layer, wherein the TiNxBy layer is between the dielectric layer and the polysilicon layer, and wherein the TiNxBy barrier layer inhibits diffusion of the fluorine atoms or ions from the conductive layer into the dielectric layer.