Patent ID: 7223707

Claim:
A method of forming a silica nanolaminate dielectric film, the method comprising: forming a first layer of the silica nanolaminate dielectric film under process conditions selected to promote smoothness by a process comprising, (a) exposing a substrate surface to a metal-containing precursor gas to form a saturated layer of metal-containing precursor on the substrate surface, and (b) exposing the substrate surface to a silicon-containing precursor gas; wherein the first layer formed has a surface roughness of no more than 2%; and forming on the first layer an additional layer of the silica nanolaminate dielectric film under process conditions selected to promote conformality by a process comprising, (c) exposing the substrate surface to the metal-containing precursor gas to form a second saturated layer of metal-containing precursor on the first layer, and (d) exposing the substrate surface to the silicon-containing precursor gas; whereby the silica nanolaminate film is formed.