Patent ID: 8951342
Filing Date: 2015-02-10
Classification: C03C,C09D,C23C,H01L

Abstract:
1. A chemical vapor deposition method for producing a porous organosilica glass film represented by the formula Si v O w C x H y F z , where v+w+x+y+z=100%, v is from 10 to 35 atomic %, w is from 10 to 65 atomic %, x is from 5 to 30 atomic %, y is from 10 to 50 atomic % and z is from 0 to 15 atomic %, said method comprising: providing a substrate within a vacuum chamber; introducing into the vacuum chamber gaseous reagents including at least one precursor selected from the group consisting of an organosilane and an organosiloxane, and a porogen that is distinct from the precursor, wherein the porogen represented by the formula: where R1-R6 are independently selected from the group consisting of: H; OH; C applying energy to the gaseous reagents in the vacuum chamber to induce reaction of the gaseous reagents to deposit a preliminary film on the substrate, wherein the preliminary film contains the porogen; and removing from the preliminary film a portion of the porogen using ultra-violet exposure, to provide the porous film with pores and a dielectric constant less than 2.6.