Problem lampoly SNF 2005-09-01 16:40:01: Lam etch non-uniformity
king at snf.stanford.edu
king at snf.stanford.edu
Thu Sep 1 16:40:02 PDT 2005
Poly isn't clearing off one side of the wafer even after a somewhat extended etch time. Gives a sloping, non-specific EP using pgm 25. One problem is that few people are recording anything in the logbook-- 83 wafers went unrecorded between my last two runs. Will try running more wafers to clean up the system.
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