Patent ID: 7189291
Filing Date: 2007-03-13
Classification: B01D,B08B,C23G,H01L

Abstract:
1. A method for the removal of airborne molecular contaminants (AMC) from a substrate comprising: providing a purified purge gas, wherein the purified purge gas comprises oxygen, the purified purge gas having a contaminant concentration of less than about 1 part per billion (ppb) on a volume basis of at least one of the contaminants selected from the group consisting of sulfur oxides, nitrogen oxides, Si-containing organics, organophosphates, amines, volatile bases, volatile acids, refractory compounds, volatile metal compounds, and non- methane hydrocarbons; contacting at least a portion of the substrate with the purified purge gas at a temperature of about 20° C. to 100° C. that does not change or chemically alter the AMC, the substrate contaminated with AMC before the substrate is contacted with purified purge gas; producing a contaminated purge gas by transferring AMC from the substrate into the purified purge gas, the contaminated purge gas including AMC from the substrate; and removing the contaminated purge gas from the substrate; thereby removing AMC from the substrate.