Plasma etching passivation nitride and oxide for Failure Analysis (FA) in a Glow Research AutoGlow 200 plasma system.
“Autoglow 200 is simple yet powerful, and makes it easy to remove silicon nitride passivation from semiconductor devices.”
Hardware Root Research LLC
Here are some before plasma nitride etch (left) and after plasma nitride etch (right) pictures of the 8″ wafer:
SF6 gas can be used for removing oxide layers or nitride layers. Our results on the AutoGlow show the following etch rates for various films:
Etching nitride: 800 mTorr, 200 watts, 2 min.,150mm wafer = 212 Angstroms/min Power can be increased to increase etch rate
Etching oxide: 800 mTorr, 400 watts, 10 min, 150mm wafer = 800 Angstroms /min Power can be increased to increase etch rate
Etching silicon: 750 mTorr, 250 watts, 10 min, 2″ x 2″ substrate, = 2400 Anstroms /min.
Removing photoresist: 750 mTorr, 300 watts, 10 min, 2″ x 2″ substrate = 1000 Angstroms/min
The AutoGlow 200 is a cost effective way to perform Plasma etching passivation nitride and oxide for Failure Analysis (FA)
For more AutoGlow 200/300 information and a video click HERE
For a partial list of Glow Research Customers click HERE.
Other papers that discuss plasma etching of passivation nitride and oxide–click HERE