Patent ID: 7432195

Claim:
A method of integrated substrate processing in a vacuum processing tool, comprising: providing a patterned substrate containing a via having a sidewall and a bottom and a trench having a sidewall and a bottom in the vacuum processing tool; and performing an integrated process on the patterned substrate in the vacuum processing tool, the process comprising: depositing a first metal-containing layer over the patterned substrate; removing the first metal-containing layer substantially completely from the bottom of the via and at least partially from the bottom of the trench by sputter etching to leave a sputter etched first metal-containing layer on a portion of the patterned substrate; depositing a conformal Ru layer over the patterned substrate including onto the sputter etched first metal-containing layer; depositing a non-conformal Cu layer onto the conformal Ru layer; and plating Cu over the patterned substrate.