Importance

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Abstract

The present disclosure is directed to a wafer drying method that detects airborne molecular contaminants in a drying gas as a feedback parameter for a single wafer or multi-wafer drying process. For example, the method includes dispensing in a wafer drying station a drying gas over one or more wafers; collecting the drying gas from an exhaust of the wafer drying station; determining the concentration of contaminants in the drying gas; re-dispensing the drying gas over the one or more wafers if the concentration of contaminants is higher than a baseline value; and transferring the one or more wafers out of the wafer drying station if the concentration is equal to or less than the baseline value.

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First Claim