Patent ID: 6632478
Filing Date: 2003-10-14
Classification: B05D,C23C,H01L

Abstract:
A method of forming a low k dielectric film on a substrate, the method comprising:depositing a carbon-containing dielectric film over the substrate by flowing a process gas comprising ozone and a gas comprising an organosilane having at least one silicon-carbon bond into a processing chamber in which the substrate is disposed; thereafter, annealing the carbon-containing dielectric film by heating the substrate while exposing the substrate to a flow of a hydrogen source; and thereafter, exposing the annealed carbon-containing dielectric film to dissociated species formed from a plasma formed from a hydrogen source; wherein the carbon-containing dielectric film has a first dielectric constant after it is initially deposited, a second dielectric constant that is less than the first dielectric constant after it is annealed and a third dielectric constant that is less than the second dielectric constant after it is exposed to the dissociated hydrogen species.