Patent ID: 6703648
Filing Date: 2004-03-09
Classification: H01L,Y10S

Abstract:
A p-type metal oxide semiconductor field effect transistor (MOSFET) device, comprising:a substrate comprising a layer of silicon germanium; a strained silicon channel region formed on the layer of silicon germanium; a gate insulator formed on the strained silicon channel region; a gate formed on the gate insulator; silicon germanium regions formed on the layer of silicon germanium adjacent to ends of the channel region; deep source and drain regions formed in the silicon germanium regions and silicon germanium layer on opposing sides of the channel region; shallow source and drain extensions formed in silicon germanium material adjacent to ends of the channel region and extending from the deep source and drain regions, wherein the shallow source and drain extensions do not extend into to the strained silicon channel region; and silicide source and drain contacts and a silicide gate contact.