Patent ID: 6660578
Filing Date: 2003-12-09
Classification: H01L

Abstract:
A method of fabricating a wafer having a section for P-type doped semiconductor devices, comprising:providing a layer of semiconductor material; forming a high-K dielectric material layer on the layer of semiconductor material; forming a layer of barrier material on the high-K dielectric material layer and patterning the layer of barrier material to be coextensive with the section for P-type doped semiconductor devices; forming a layer of material to receive P-type doping on at least the layer of barrier material; and implanting the layer of material to receive P-type doping with P-type dopant and wherein the layer of barrier material inhibits P-type ion penetration into the high-K dielectric material layer during implantation; and wherein the layer of material to receive P-type doping is also formed on a section of the high-K dielectric material layer left exposed following patterning of the layer of barrier material, and the method further comprising masking a section of the layer of material to receive P-type doping formed on the high-K dielectric material prior to the implanting of P-type dopant.