Patent ID: 6902771

Claim:
A process for producing a silica-based dielectric film in a semiconductor device, the process comprising applying directly on a semiconductor device a film comprising at least one siloxane compound; and irradiating the film comprising at least one siloxane compound with electron beams at an irradiation dose of from 1 to 200 μC/cm 2 to thereby react the siloxane compound throughout the film and generate silicon carbide bonds represented by Si—C—Si while maintaining the dielectric constant of the film at a value of 3 or lower, wherein the siloxane compound is a product obtained from at least one compound selected from the group consisting of compounds represented by the following formula (1): R 1 a Si(OR 2 ) 4-a (1) where R 1 represents a monovalent organic group or a hydrogen atom; R 2 represents a monovalent organic group; and a is an integer of 0 to 2, and compounds represented by the following formula (2): R 3 b (R 4 O) 3-b Si—(R 7 ) d —Si(OR 5 ) 3-c R 6 c (2) where R 3 , R 4 , R 5 , and R 6 may be the same or different and each represents a monovalent organic group; b and c may be the same or different and each is an integer of 0 to 2; R 7 represents an oxygen atom or a group represented by —(CH 2 ) n —, where n is 1 to 6; and d is 0 or 1.