Patent ID: 8716759

Claim:
A prompt-shift device comprising: a semiconductor substrate having at least one field effect transistor located within a memory area of said substrate, said at least one field effect transistor including a patterned gate region, an extension dielectric spacer abutting sidewalls of said patterned gate region, and a source/drain dielectric spacer having a surface in direct contact with sidewalls of said extension dielectric spacer; an altered extension region located within said semiconductor substrate, on at least one side of said patterned gate region, and having an innermost edge located directly beneath said extension dielectric spacer and positioned between, but not vertically aligned with, an inner edge and an outer edge of said extension dielectric spacer, said altered extension region having an extension ion dopant concentration of less than about 1E20 atoms/cm 3 ; an altered halo region located within said semiconductor substrate and on at least one side of said patterned gate region, said altered extension region having a halo ion dopant concentration of greater than about 5E18 atoms/cm 3 , said altered halo region is in direct contact with said altered extension region; source and drain regions located within said semiconductor substrate and on both sides of said patterned gate region, wherein an innermost edge of each of said source and drain regions is located directly beneath the source/drain dielectric spacer and is positioned between, but not vertically aligned with, an inner edge and an outer edge of said source/drain dielectric spacer, and wherein said altered extension region and said altered halo region provide a peak electrical field beneath the extension dielectric spacer, and wherein no portion of said source and drain regions, said altered extension region, and said altered halo region extends directly beneath a vertical edge of said patterned gate region.