Patent ID: 7790617
Filing Date: 2010-09-07
Classification: H01L

Abstract:
1. A method of forming an interconnect comprising: providing an interconnect dielectric layer on a substrate of a semiconductor structure, the interconnect dielectric layer having a top surface; providing an interconnect opening in the interconnect dielectric layer; forming an interconnect in the interconnect opening with the top surface of the interconnect dielectric layer exposed, the interconnect having an interconnect top surface below the top surface of the interconnect dielectric layer to form a recess in the interconnect opening; treating the interconnect top surface, wherein the treating comprises forming an oxide layer on the interconnect top surface in the opening; and after treating the interconnect top surface, forming a blanket metal silicide layer on the exposed top surface of the interconnect dielectric layer and filling the recess using a non-reactive process, wherein the non-reactive process improves interconnect reliability.