Patent ID: 8648388
Filing Date: 2014-02-11
Classification: H01L

Abstract:
1. A field effect transistor comprising: a silicon substrate; a plurality of elongated uniaxially-strained SiGe regions disposed on the silicon substrate, wherein each elongated uniaxially-strained SiGe region of the plurality of elongated SiGe regions is spaced apart, with a portion of the silicon substrate exposed between each elongated SiGe region; a gate dielectric layer disposed on the plurality of elongated SiGe regions and on the portion of silicon substrate in between each elongated SiGe region; wherein the gate is oriented perpendicular to the elongated SiGe regions; a gate disposed on the gate dielectric layer; a channel region disposed below the gate, wherein electrical carriers flow through the channel region; a source region disposed on a first side of the gate; a drain region disposed on a second side of the gate; wherein the plurality of elongated SiGe regions are oriented in parallel to the direction of flow of electrical carriers in the channel region, and further comprising a first shallow trench isolation region disposed on a first side of the plurality of elongated uniaxially-strained SiGe regions and a second shallow trench isolation region disposed on a second side of the plurality of elongated uniaxially-strained SiGe regions.