Patent ID: 8404545

Claim:
A method of for fabricating a tunnel field effect transistor (TFET), comprising: providing on a substrate a source-channel-drain structure made of a semiconductor material, the structure comprising at least one drain region, at least one channel region, and at least one source region, the channel region forming a source-channel interface with the source region and a drain-channel interface with the drain region; selectively doping the drain region, channel region, and source region to a desired doping level and dopant type; and providing on the source-channel-drain structure a gate electrode which covers at least part of the source region and at least extends up to the source-channel interface such that there is a finite distance between the end of the gate electrode oriented towards the channel and the plane of the channel-drain interface, such that there is no coverage by the gate electrode of the drain region, wherein a section of the channel region which is not covered by the gate electrode is not bypassed by a parallel conductive path to the drain.