Patent ID: 8841732

Claim:
A CMOS device is provided comprising: a first semiconductor (SC) region of a first conductivity type extending to a first surface and defining a first doped region; spaced apart source and drain regions in the first semiconductor region and of a second, opposite, conductivity type; a body contact region in the first semiconductor region and of the first conductivity type; and a further doped region of the first conductivity type located in the first doped region, spaced apart from and underlying the source and drain regions and the body contact region such that the source and drain regions and the body contact region are isolated from the further doped region, the further doped region having deep donors that become more fully ionized with increasing temperature such that over the operating temperature range of the device the conductivity of the further doped region substantially increases in response to the increasing temperature, wherein the deep donors comprise from 30 to 50% of the total donors in the first doped region, and wherein the deep donors are selected from the group consisting of Ta, Te, Sn, and combinations thereof.