Patent ID: 8765539
Filing Date: 2014-07-01
Classification: B82Y,H01L

Abstract:
1. A method for forming a semiconductor device, comprising: forming a semiconductor structure having a longitudinal axis, wherein a semiconductor core having a first dopant concentration extends along the longitudinal axis, and wherein a semiconductor shell having a second, higher dopant concentration also extends along the longitudinal axis and encircles the semiconductor core; selectively removing a portion of the semiconductor shell from a middle section of the semiconductor structure, so that a remaining portion of the semiconductor shell encircles a portion of the semiconductor core at two terminal sections at opposite ends of the middle section, but not at the middle section of the semiconductor structure; and forming a field effect transistor (FET) from the semiconductor structure, wherein the FET comprises a source located at one of the two terminal sections of the semiconductor structure, a channel located at the middle section of the semiconductor structure, a drain located at the other of the two terminal sections of the semiconductor structure, and a gate structure over a portion of the semiconductor core at the middle section of the semiconductor structure.