Patent ID: 7560753
Filing Date: 2009-07-14
Classification: H01L

Abstract:
1. A field effect transistor, comprising: a silicon body, an entire perimeter of said silicon body abutting a dielectric isolation; a source and a drain formed in said body and on opposite sides of a channel formed in said body; and a gate dielectric layer between said body and an electrically conductive gate electrode, a bottom surface of said gate dielectric layer abutting a top surface of said body and a bottom surface said gate electrode abutting a top surface of said gate dielectric layer, said gate electrode having a first region having a first thickness and a second region having a second thickness, said first region extending along said top surface of said gate dielectric layer over said channel region, said second thickness greater than said first thickness, wherein said first region of said gate electrode comprises a metal silicide layer on said top surface of said gate dielectric, and wherein said second region of said gate electrode comprises a polysilicon layer on said top surface of said gate dielectric, and said metal silicide layer extending along and on a sidewall and a top surface of said polysilicon layer.