Patent ID: 6037258
Filing Date: 2000-03-14
Classification: H01L

Abstract:
A method of forming a metal structure, on a semiconductor substrate, comprising the steps of:providing an insulator layer, on said semiconductor substrate, and providing an opening in said insulator layer, exposing an underlying conductive region;depositing a barrier layer;depositing a first copper seed layer, in a chamber of a cluster tool;performing a cooling procedure to said semiconductor substrate, in situ, in said chamber of said cluster tool;depositing a second copper seed layer, on said first copper seed layer, in situ, in said chamber of said cluster tool, to a thickness between about 500 to 1200 Angstroms, using a plasma vapor deposition procedure;depositing a thick copper layer on said second copper layer, to a thickness between about 5000 to 16000 Angstroms, via a electro-chemical deposition procedure; andremoving regions of said thick copper layer, regions of said second copper seed layer, regions of said first copper seed layer, and regions of said barrier layer, from the top surface of said insulator layer, to form said metal structure, in the opening in said insulator layer.