Patent ID: 9431539
Filing Date: 2016-08-30
CPC Classification: B82Y,H01L

Claim Text:
1. A method comprising: forming a silicon germanium (SiGe) strained relaxed buffer (SRB) on a silicon substrate, the SiGe SRB having a first region and a second region; forming a tensile strained silicon (Si)/SiGe stack on the SRB first region; forming a compressive strained Si/SiGe stack on the SRB second region; forming a first fin from the tensile strained Si/SiGe stack and the SiGe SRB and a second fin from the compressive strained Si/SiGe stack and SiGe SRB; anchoring portions of the first and second fins; and removing the SiGe from the Si/SiGe stack on the first region and the Si from the Si/SiGe stack on the second region, forming first and second tunnels, respectively.