Patent ID: 7820556

Claim:
A method of treating an acetylene gas stream prior to use in forming a layer of high carbon content material on a semiconductor substrate during fabrication of an electronic device, the method comprising: (a) delivering the acetylene gas stream to an inlet of an pre-processing module disposed upstream from a deposition chamber for forming the layer of high carbon content material wherein the acetylene gas stream is provided from an acetylene source comprising storage solvent in which acetylene is soluble; (b) condensing said storage solvent from the acetylene gas stream in the pre-processing module to provide a reduced storage solvent concentration in the acetylene gas stream having a substantially constant concentration of said storage solvent over a time period during which said layer of high carbon content material is deposited on the semiconductor substrate, wherein the substantially constant concentration of storage solvent is not greater than about 0.4% by volume in the reduced storage solvent concentration acetylene gas stream, as said reduced storage solvent concentration acetylene gas stream exits the pre-processing module; and (c) delivering said reduced storage solvent concentration acetylene gas stream from the pre-processing module to the deposition chamber, wherein delivering said reduced storage solvent concentration acetylene gas stream comprises passing said reduced storage solvent concentration acetylene gas stream through a heater configured to heat said reduced storage solvent concentration acetylene gas stream.