Patent ID: 7595263
Filing Date: 2009-09-29
Classification: C23C,H01L

Abstract:
1. A method for forming metal interconnect structures on a substrate surface, comprising: exposing a substrate to tungsten hexafluoride and a reducing gas to form an initiation layer on the substrate during a soak process; depositing a barrier layer comprising tungsten nitride on the substrate during a first atomic layer deposition process; exposing the barrier layer to a first processing gas comprising silane or diborane prior to depositing a tungsten-containing layer; depositing the tungsten-containing layer on the barrier layer during a second atomic layer deposition process; exposing the tungsten-containing layer to a second processing gas comprising silane or diborane prior to depositing a bulk metal layer comprising tungsten; and depositing the bulk metal layer comprising tungsten on the substrate during a chemical vapor deposition process.