Patent ID: 9059285
Filing Date: 2015-06-16
Classification: H01L

Abstract:
1. An n-type field effect transistor (NFET) complementary metal-oxide-semiconductor (CMOS) device having a source region and a drain region, the NFET CMOS comprising: an n-type doped layer in at least one of the source region and the drain region, wherein the n-type doped layer includes a lower portion and an upper portion, a lower n-type doped layer, positioned under the n-typed doped layer, wherein the lower n-type doped layer comprises crystalline silicon carbon phosphorous (SiCP), wherein the lower n-type doped layer and the lower portion of the n-type doped layer are separated by an intermediate layer, wherein the intermediate layer comprises n-type doped silicon (Si), and wherein the intermediate layer has a thickness of approximately 5 nm.