Patent ID: 6939800
Filing Date: 2005-09-06
Classification: H01L

Abstract:
1. A method for forming a dielectric copper barrier layer, the method comprising: providing a substrate having formed thereon an insulating layer having formed therein an opening configured to receive an inlaid copper structure, the insulating layer being formed of a material that includes at least one of silicon and carbon; and treating the insulating layer so that a dielectric copper barrier layer is formed on the inside surface of the opening thereby producing a barrier to copper diffusion into the insulating layer wherein said treating includes: depositing precursor materials selected from the group consisting of vinyl tri-methyl silane (C plasma treating the precursor materials with an inert plasma; and repeating the operations of depositing the precursor materials and plasma treating the precursor materials to add additional dielectric copper barrier sub-layers onto to the underlying dielectric copper barrier sub-layers until a final dielectric copper barrier layer is formed having a desired thickness.