Patent ID: 6762500
Filing Date: 2004-07-13
Classification: H01L

Abstract:
A semiconductor circuit, comprising:a semiconductor structure; an insulating layer over the semiconductor structure, the insulating layer having a contact opening extending therethrough to the semiconductor structure, wherein the contact opening has a surface and an aspect ratio of about 3:1 or greater wherein a diameter of the opening is about 0.25 &mgr;m or less; a non-metal barrier layer comprising silicon oxynitride over the insulating layer including the surface of the contact opening; whereby the barrier layer prevents diffusion of a copper-comprising material into the insulating layer; and a substantially void-less conductive contact within the contact opening over the barrier layer, and coupled to the semiconductor structure; the conductive contact comprising copper sputtered into the contact opening and reflowed at a temperature less than about 400Â° C. in the presence of atomic hydrogen.