Patent ID: 6902980

Claim:
A method of forming a metal oxide semiconductor field effect transistor (MOSFET), on a semiconductor substrate, comprising the steps of: providing a conductive gate structure, having a top surface, on an underlying gate insulator layer with a lightly doped source/drain (LDD) region located in an area of said semiconductor substrate not covered by said conductive gate structure; forming a composite insulator spacer, having inner portions and outer portions, on the sides of said conductive gate structure, with said inner portions directly contacting said conductive structure and said LDD region, and forming a heavily doped source/drain region in an area of said semiconductor substrate not covered by said conductive gate structure or by said composite insulator spacers; performing a first procedure to remove said outer portions of said composite insulator spacer to expose said inner portions of said composite insulator spacer; performing a second procedure to etch back said conductive gate structure until top surface of said conductive gate structure is lower than top surface of said inner portions of said composite insulator spacer component, and to remove a portion of said formed heavily doped source/drain region; performing a third procedure to grow raised first conductive shapes on said heavily doped source/drain region and on exposed portion of said LDD region, and to form a raised second conductive shape on recessed, said conductive gate structure; implanting dopant into said raised conductive shapes, and into said raised second conductive shape; and selectively forming metal silicide on said raised first conductive shapes and on said raised second conductive shape.