Patent ID: 7309395
Filing Date: 2007-12-18
Classification: B05D,H01L

Abstract:
1. A system for depositing a composite polymer dielectric film on a substrate, the composite polymer dielectric film including a low dielectric constant polymer layer disposed between and chemically bonded to a first silane-containing layer and a second silane-containing layer, the system comprising: a process module including a processing chamber, a source of monomer containing a monomer having a general formula of X′ m —Ar—(CZ′Z″Y′) n , wherein Ar is an aromatic group or a fluorine-substituted aromatic group, wherein Z′ and Z″ are removable to generate free radicals, wherein m and n are each equal to zero or an integer, and wherein m+n is less than or equal to a total number of sp 2 hybridized carbons on Ar available for substitution, and a monomer delivery system configured to remove the leaving groups and to deliver the monomer in a gas phase into the processing chamber for deposition of the low dielectric constant polymer layer; a post-treatment module for annealing the composite polymer dielectric film; a silane delivery system configured to deliver a vapor flow containing a silane precursor into the system for forming the first silane-containing layer and the second silane-containing layer; memory and a processor in electrical communication with the process module, the post-treatment module and the silane delivery system; and instructions stored on the memory and executable by the processor to control the silane delivery system to deposit the silane precursor on the substrate for a first interval to form the first silane-containing layer, next to control the process module to deposit the gas phase monomer on the first adhesion promoter silane-containing layer for a second interval to form the dielectric constant polymer layer, and next to control the silane delivery system to deposit the silane precursor on the low dielectric constant polymer layer for a third interval to form the second silane-containing layer.