Patent ID: 8350298
Filing Date: 2013-01-08
Classification: H01L

Abstract:
1. A hybrid material inversion mode GAA (Gate-All-Around) CMOSFET (Complementary Metal Oxide Semiconductor Field Effect Transistor) comprising: a semiconductor substrate; a PMOS region having a first channel, an NMOS region having a second channel, and a gate region; the NMOS region is stacked up above the semiconductor substrate, and the PMOS region is stacked up above the NMOS region; the NMOS region and the PMOS region each includes a source region and a drain region located at the two opposite ends of the channel respectively thereof; the first channel and the second channel each has a racetrack-Shaped cross section having a rectangular central portion and two substantially semicircular end portions contacting the opposite ends of the rectangular central portion, each of the first channel and the second channel is parallel to the semiconductor substrate, the first channel is stacked up above the second channel, the first channel is formed of n-type Ge and the second channel is formed of p-type Si; the surfaces of the first channel and the second channel are substantially surrounded by the gate region; a first buried oxide layer is disposed between the PMOS region and the NMOS region other than the gate region; and a second buried oxide layer is disposed between the NMOS region and the semiconductor substrate other than the gate region.