Patent ID: 7900167

Claim:
A design structure for a semiconductor structure, said design structure comprising at least layout parameters, test patterns and other testing information and manufacturing line routing information for said semiconductor structure, said design structure being embodied in a machine readable storage medium accessible by a machine that processes said design structure to produce said semiconductor structure, and said semiconductor structure comprising: a first semiconductor layer having a bottom surface and comprising silicon germanium and a first dopant having a first conductivity type; and a second semiconductor layer below and immediately adjacent to said first semiconductor layer, said second semiconductor layer comprising silicon; and a third semiconductor layer below and immediately adjacent to said second semiconductor layer, none of said first semiconductor layer, said second semiconductor layer and said third semiconductor layer being carbon-doped, said second semiconductor layer having a top surface adjacent to said bottom surface and comprising a diffusion region at said top surface, said diffusion region comprising both said first dopant and a second dopant having a second conductivity type different from said first conductivity type, and said top surface comprising approximately no defects such that a peak concentration of said first dopant in said first semiconductor layer adjacent to said bottom surface is at least 100 times greater than a concentration of said first dopant in said diffusion region of said second semiconductor layer.