Patent ID: 8624210
Filing Date: 2014-01-07
Classification: C03B,H01L,Y10T

Abstract:
1. A method of processing a semiconductor substrate, comprising: (a) transporting a semiconductor substrate into a degas chamber comprising a quartz window removably mounted over an opening in a top wall of the degas chamber and a UV lamp assembly disposed above the quartz window, the quartz window including a plenum and at least one gas passage in fluid communication with the plenum; (b) supplying the degas chamber with an ozone-containing gas; (c) evacuating the plenum; (d) generating O radicals in the chamber by irradiating the ozone-containing gas in the degas chamber with UV light through the quartz window; (e) forming volatile byproducts by reacting halogen-containing residues on the semiconductor substrate with the O radicals for a time period and evacuating the volatile byproducts from the chamber; (f) supplying the ozone-containing gas to the plenum and adjusting ozone partial pressure in the plenum to essentially block the UV light; (g) evacuating the degas chamber; (h) transporting the semiconductor substrate out of the degas chamber; (i) repeating steps (a)-(h) with another semiconductor substrate.