by Tori Riggs
An Oxford University spin-off has developed some new solar technology that is made from cheap, abundant and nontoxic that can be made in any size.
Hoarding the sun's energy, these solar cells can be printed onto glass or other surfaces, made in many different colors, and could be perfect for new buildings that have solar cells incorporated in glazing panels and walls.
The color green on these new solar cells is the most efficient "semi-transparent" color for producing electrical energy, but red and purple also work as well.
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