Patent ID: 7582516

Claim:
A method for forming a semiconductor device, comprising: forming a semiconductor substrate that comprises at least first and second device regions, both of which have substantially planar upper surfaces oriented along one of a first set of equivalent crystal planes; selectively masking the first device region; growing a protruding semiconductor structure at the second device region, wherein the protruding semiconductor structure has two surfaces intercepting at an apex, the two surfaces oriented along a second, different set of equivalent crystal planes, the protruding semiconductor structure grown with a faceted epitaxial process at a growth temperature ranging from 700° C. to 900° C. and a growth pressure ranging from 5 torr to 80 torr; unmasking the first device region; and forming a first field effect transistor (FET) at the first device region and a second, complementary FET at the second device region, wherein the first FET comprises a channel that extends along the substantially planar upper surface of the first device region, and wherein the second, complementary FET comprises a channel that extends along the two surfaces of the protruding semiconductor structure at the second device region.