Patent ID: 7402496
Filing Date: 2008-07-22
Classification: H01L

Abstract:
1. A method of fabricating a complementary metal-oxide-semiconductor device, comprising: providing a substrate having an isolation structure dividing the substrate into a first active region and a second active region, wherein the first active region has a first gate structure, a first spacer structure and a first LDD formed therein and the second active region has a second gate structure, a second spacer structure and a second LDD formed therein; forming a passivation layer conformally over the substrate, wherein the passivation layer comprises a carbon-containing oxynitride layer; forming a photoresist layer on the passivation layer of the second active region; performing an etching process by using the first photoresist layer as a mask to remain a portion of the first passivation layer completely covering the first gate structure and the first spacer structure removing the photoresist layer; removing a portion of the exposed substrate in the first active region by using the passivation layer as a mask to form a trench in the substrate; filling an epitaxial material layer in the trench to serve as a first conductive source/drain (S/D) region; removing the passivation layer; and forming a doped region on the substrate in the second active region to serve as a second conductive S/D region.