Thin-film solar cells promise to bring flexible, low-profile solar power to all kinds of surfaces. Unfortunately, constructing thin-film panels requires cadmium chloride, a finicky, expensive, and toxic material. Now, University of Liverpool scientists have figured out how to make solar cells using magnesium chloride, a compound so innocuous, it's actually used in the production of tofu.
via Gizmodo http://ift.tt/1m2tkTM http://ift.tt/1m2sk1L
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