Patent ID: 9691848
Date: 2017-06-27
CPC Classifications: B82Y,H01L,Y02E

Claim:
1. A semiconductor structure, comprising: a germanium (Ge)-rich nanowire above a substrate, the Ge-rich nanowire having a channel region; a SiGe transition layer above the substrate, and below the Ge-rich nanowire; an n-type SiGe layer above the substrate, and below the SiGe transition layer; a gate electrode surrounding the channel region of the Ge-rich nanowire, wherein a portion of the gate electrode is between the Ge-rich nanowire and the SiGe transition layer; a source region adjacent to a first end of the channel region of the Ge-rich nanowire at a first side of the gate electrode; and a drain region adjacent to a second end of the channel region of the Ge-rich nanowire opposite the first end of the channel region, the drain region at a second side of the gate electrode opposite the first side.