Patent ID: 8129289

Claim:
A method of depositing a conformal silicon dioxide in semiconductor fabrication comprising: positioning a semiconductor substrate having a sacrificial material adjacent the semiconductor substrate into a deposition region of a deposition apparatus, the semiconductor substrate having a non-planar topography; exposing the semiconductor substrate to a first mixture comprising a first reactant and a first catalyst wherein the first reactant is hexachlorodisilane (“HCD”) and the first catalyst is pyridine, permitting the formation of a first reactant chemisorbed layer on the semiconductor substrate; and exposing the semiconductor substrate to a second mixture comprising a second reactant and a second catalyst wherein the second reactant is a compound containing oxygen and hydrogen and the second catalyst is pyridine, permitting the formation of a silicon dioxide monolayer on the semiconductor substrate; wherein the exposings of the semiconductor substrate to the first mixture and the second mixture do not decompose the sacrificial material.