Wednesday, October 22, 2008

Re: Problem stsetch SNF 2008-10-21 18:17:30: broken wafer

Vented the chamber and removed the wafer pieces. Wet cleaned the electrode and ran an O2 plasma.
The wafer breakage was caused by a heavy coating of resist on the back of the wafer which caused the wafer to stick to the o-ring and ceramic ring.

No comments: