Patent ID: 8377787

Claim:
A method of forming a semiconductor device, comprising: providing a semiconductor substrate; forming a gate structure on the semiconductor substrate; forming one of a source and a drain adjacent a first sidewall of the gate structure, wherein the forming the one of a source and a drain comprises: doping the semiconductor substrate to form an area of a first concentration of a first dopant type thereby forming a first doped region; and thereafter, doping a portion of the first doped region to provide a second doped region and a third doped region having a second concentration of the first dopant type different than the first concentration, wherein the third doped region is spaced a distance from the second doped region; and forming the other one of the source and the drain on a second sidewall of the gate structure, the second sidewall opposing the first sidewall, and wherein an imaginary line drawn parallel to the first sidewall transverses each of the first, second and third doped regions.