Patent ID: 8994112
Filing Date: 2015-03-31
Classification: H01L

Abstract:
1. A fin field effect transistor (FinFET) comprising: a semiconductor substrate; a fin having an upper portion and a lower portion, the upper portion being doped with a dopant of a first conductivity type, the lower portion being doped with a dopant of a second conductivity type, wherein the junction between the upper portion and the lower portion acts as a diode; one or more shallow trench isolation layers (STI) adjacent the fin, wherein the junction is lower than an upper surface of the shallow trench isolation layers; at least one layer of high-k dielectric material between the shallow trench isolation layer and the fin and at least partially between the shallow trench isolation layer and the semiconductor substrate, wherein a portion of the high-k dielectric material lies beneath the shallow trench isolation layers surrounding the lower portion of the fin.