Patent ID: 7056806

Claim:
A method of depositing a material on a plurality of microfeature workpieces held in a spaced relationship within an enclosure of a processing system, the enclosure including a first precursor gas and having a first enclosure pressure, the method comprising: reducing pressure within the enclosure to a second enclosure pressure while introducing a flow of a purge gas into the enclosure at a first flow rate, the second enclosure pressure being less than the first enclosure pressure, the processing system having a base pressure at the first flow rate, and a difference between the second enclosure pressure and the first enclosure pressure being at least 90% of the difference between the base pressure and the first enclosure pressure; and after reducing the pressure within the enclosure to the second enclosure pressure, increasing flow rate of the purge gas to a second flow rate and increasing the pressure within the enclosure to a third enclosure pressure, the second flow rate being greater than the first flow rate and the third enclosure pressure being greater than the second enclosure pressure.