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debacle
on Aug 10, 2012
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So long, silicon: Researchers create solar panels ...
Cu2o is still about 2-3x as expensive, though.
mchannon
on Aug 10, 2012
[–]
Silicon wafers (cheap ones) cost about $150/kg. Polysilicon (good luck making a wafer out of it) costs about $30/kg (market has crashed). Copper costs about $7.50/kg.
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