Patent ID: 7049247

Claim:
A method for fabricating an ultralow dielectric constant film comprising the steps of: flowing a first precursor gas having a linear molecular formula of SiRR′R″R′″, where R,R′,R″, and R′″ are the same or different and are selected from H, alkyl, and alkoxy into a chamber of a plasma enhanced chemical vapor deposition (PECVD) reactor; flowing a second precursor gas having one of the following formulas where R 1 , R 2 , R 3 , R 4 , R 5 and R 6 may or may not be identical and are selected from hydrogen, alkyl, alkenyl or alkynyl groups that may be linear, branched, cyclic, polycyclic and may be functionalized with oxygen, nitrogen or fluorine containing substituents into said chamber; and depositing an ultralow k film from said precursor gases on a substrate.