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Protective Cover for Solar Cells? Answered

I have a commercial solar panel that has burned out cells.  I figure this is a great candidate for overhauling.  I notice that the cells are protected with what appears to be clear silicon with a clear plastic covering, Tedlar or Kevlar?  Anyone know where to get large quantity of silicon for large pour of covering?  It would appear to me that after the cells are assembled the silicon would be poured and then the plastic cover placed on top and the some sort of rolling pin or squeegy to smooth out, this would be better than plexiglas laid over the cells,  hail could hit it and not break anything.

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steveastrouk
steveastrouk

Best Answer 11 years ago

You need to look at the spectral absorbence characteristics of your materials - maybe silicone is bad in the blue end that most cells need.

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Foxtrot70
Foxtrot70

Answer 11 years ago

Hi Steveastrouk - I mentioned clear silicon as it appears to be that, but it may have other positive characterists for use with silicon cells.  Definitely would reduce damage from hail storms. 

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ktahreem
ktahreem

8 years ago

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Foxtrot70
Foxtrot70

11 years ago

Thanks to all of you for your responses I will do some more research and see how it goes.

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frollard
frollard

11 years ago

Agreed 100% with steve - is it a soft material like 'hard' silicone, or is it brittle like an epoxy?  2-part epoxy (or polyester resin) would be easier to get a quantity of in a clear form...and likely clearer...

I know a lot of panels come already sealed in epoxy.

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Foxtrot70
Foxtrot70

Answer 11 years ago

Hi Frollard - The potting material seems to be a stiff or hard clear silicon.  The clear plastic covering I assume is placed before the potting material sets might be ultra-violet resistant.  I like this set up as the panel is able to withstand harsh hail storms and moisture is sealed out.

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appolo
appolo

11 years ago

Ditto steveastrouk, How about trying clear bubble wrap as used for insulating the inside windows of greenhouses! It may work and also absorb any shock damage. What ever you decide upon make trial voltage measurements with different materials first to see how the output is affected.