B
Bernhard Kuemel
- Jan 1, 1970
- 0
Hi!
In this video
the guy says Sylgard 184, a brand of silicone, protects the cells from
moisture, the environment and oxygen. "You won't get 30 years out of
these if they're exposed to oxygen."
Now I wonder two things.
Firstly, isn't silicone "highly" permeable to gas? Does it really
protect from oxygen?
Secondly, is oxygen really a problem? I guess the semiconductor is
immune, cause oxygen forms a highly stable and protective silicon oxide
passivation layer. But there's also contact fingers and bus bars made of
silver paste and other materials and solder connections.
Is Sylgard 184 silicone really a suitably protective encapsulant? I also
found POLASTOSIL M-2000 which is supposed to be like SYLGARD 184:
http://www.ebay.com/itm/271079655104 . Do you think that's good, too?
Thanks, Bernhard
In this video
the guy says Sylgard 184, a brand of silicone, protects the cells from
moisture, the environment and oxygen. "You won't get 30 years out of
these if they're exposed to oxygen."
Now I wonder two things.
Firstly, isn't silicone "highly" permeable to gas? Does it really
protect from oxygen?
Secondly, is oxygen really a problem? I guess the semiconductor is
immune, cause oxygen forms a highly stable and protective silicon oxide
passivation layer. But there's also contact fingers and bus bars made of
silver paste and other materials and solder connections.
Is Sylgard 184 silicone really a suitably protective encapsulant? I also
found POLASTOSIL M-2000 which is supposed to be like SYLGARD 184:
http://www.ebay.com/itm/271079655104 . Do you think that's good, too?
Thanks, Bernhard