Patent ID: 8598706
Filing Date: 2013-12-03
Classification: C23C,H01L,Y10T

Abstract:
1. A method for forming an interlayer dielectric film by a plasma CVD method using a raw-material monomer with an unsaturated hydrocarbon, comprising: forming the interlayer dielectric film in a film-forming chamber by the plasma CVD method using the raw-material monomer with the unsaturated hydrocarbon; after the operation of forming the interlayer dielectric film, applying a surface treatment using a plasma of a first inert gas to a surface of the interlayer dielectric film in the film-forming chamber; and then turning off a radio frequency power used for generation of the plasma of the first inert gas and purging the film-forming chamber with a second inert gas, wherein during the operation of forming the interlayer dielectric film, a carrier gas is used to feed the raw-material monomer to the film-forming chamber, wherein after the operation of forming the interlayer dielectric film, the surface treatment using the plasma of the first inert gas is subsequently applied in the film-forming chamber, wherein only the raw-material monomer and a carrier gas are introduced into the film-forming chamber during the operation of forming the interlayer dielectric film, and the raw-material monomer and the carrier gas are introduced into the film-forming chamber via a raw-material supply valve, wherein after forming the film, the introduction of the raw-material monomer and the carrier gas are stopped simultaneously, wherein the flow rate of the second inert gas during the purging is controlled so that a residence time thereof is 0.8 seconds or less in the film-forming chamber, wherein the raw-material monomer with the unsaturated hydrocarbon is selected from the group consisting of an organosiloxane having a 3-membered ring of SiO of Formula I, an organosiloxane having a 4-membered ring of SiO of Formula V, and an organosiloxane having a straight chain structure of SiO of Formula X: wherein R1 is an unsaturated hydrocarbon; R2 is a saturated hydrocarbon or hydrogen; wherein R3 is an unsaturated hydrocarbon; R4 is a saturated hydrocarbon; wherein R5 is an unsaturated hydrocarbon; R6, R7, and R8 are each a saturated hydrocarbon.