Patent ID: 6093966
Filing Date: 2000-07-25
Classification: H01L

Abstract:
A method of forming a semiconductor device, comprising the steps of:providing a substrate in a processing chamber, the substrate having an insulating layer and an opening in the insulating layer;forming a copper barrier layer on the insulating layer and in the opening, the forming step comprising the substeps of:providing a plurality of refractory metal atoms and a plurality of silicon atoms in the processing chamber;ionizing the plurality of refractory metal atoms and the plurality of silicon atoms by applying a first bias to the plurality of refractory metal atoms and the plurality of silicon atoms to form a plasma;biasing the substrate at a first stage bias followed by a second stage bias to accelerate the plasma to the substrate to form the copper barrier layer, wherein the first stage bias is less than the second stage bias; anddepositing a copper-containing metal on the copper barrier layer over the insulating layer and in the opening.