Removing the lead hazard from perovskite solar cells


Although they offer a very promising solution for capturing solar energy, perovskite solar cells contain lead, which is toxic to the environment and a serious health hazard. EPFL scientists have now found a very elegant and efficient solution to this, by adding a transparent phosphate salt that doesn’t interfere with light-conversion efficiency while preventing lead from seeping into the soil in cases of solar panel failure.





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