science forum beginner
Joined: 02 Jan 2006
|Posted: Mon Jan 02, 2006 3:21 pm Post subject:
polyvinylalcohol layer: what happens above 120'C
I have spincoated a 800nm PVOH coating on a silicon wafer. PVOH in a water
The quality of my coating is not good enough: adhesion-type problems.
When I heat my silicon with PVOH coating to 120'C for 15 min in a convection
oven, quality is good.
Q: What happens physically - I know it is not the water/solvent from the
layer - has been tested.
Q:Why can this effect not be reached at lower temperatures? Any other way,