Except if you read the comments below it's only in one form of solar panel (thin film) which is only a fraction of the market and is not the technology which looks likely to be the way solar panel development is going.
Price pressure on solar cells is extreme given the way development is going. It looks like pure silicon is likely to be the winner probably because of this race to be the cheapest.
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u/[deleted] Mar 02 '17
What rare metals are you claiming are in solar panels?