Patent ID: 6284652
Filing Date: 2001-09-04
Classification: H01L

Abstract:
In integrated circuit fabrication, a method of applying copper to a barrier material substrate, the method comprising the following steps:a) providing a diffusion barrier material substrate having deposited thereon a diffusion barrier material;b) in a chemical vapor deposition (CVD) chamber, depositing a first adhering conforming layer of copper by means of CVD on the diffusion barrier material substrate using (hfac)Cu(1,5-Dimethylcyclooctadiene) precursor, whereby said first layer of copper adheres directly to the barrier material to provide a copper seed layer to which subsequently-deposited copper will adhere; andc) in an electro-chemical deposition apparatus, depositing a second layer of copper by means of electro-chemical deposition on said first layer of copper deposited in step a) until a predetermined thickness of copper is formed on each copper-receiving surface.