Patent ID: 7943467
Filing Date: 2011-05-17
Classification: H01L,Y10S

Abstract:
1. A method of fabricating a device comprising: providing a semiconducting device comprising a gate structure atop a substrate, the gate structure comprising a dual gate conductor including an upper gate conductor and a lower gate conductor, wherein at least the lower gate conductor comprises a silicon containing material; forming a contact metal layer on the upper surface of the semiconducting device; forming a metal nitride layer on the contact metal layer; removing a portion of the metal nitride layer overlying the gate structure, a portion of the contact metal layer overlying the gate structure and an upper portion of the upper gate conductor with a substantially non-selective material removal process; removing a remaining portion of the upper gate conductor selective to the lower gate conductor; depositing a metal on at least the lower gate conductor; and producing a silicide from the metal and the lower gate conductor.