Patent ID: 7354816

Claim:
A field effect transistor structure, comprising: a semiconductor substrate; first and second source/drain regions formed as sections of a first conductivity type in the semiconductor substrate and adjoining a structure surface of the semiconductor substrate; a channel region formed between the source/drain regions, the channel region being intrinsically conducting or doped in accordance with a second conductivity type opposite to the first conductivity type; a gate electrode arranged above the channel region; a gate dielectric separating the channel region from the gate electrode; and a first dielectric spacer structure adjacent the structure surface and adjoining the gate electrode in a manner oriented toward the first source/drain region, the first dielectric spacer structure including a first control section adjoining the semiconductor substrate, the first control section comprising fixed, immobile charge carriers of a second charge type, corresponding to the second conductivity type, wherein the first control section has a surface charge density of greater than 1 e11/cm 2 .