Using enhanced halide perovskite in place of silicon could produce less expensive devices that stand up better to light, heat. Amid all of the efforts to convert the nation’s energy supply to renewable sources, solar power still accounts for a little less than 3% of electricity generated in the U
“Perovskite will be a game changer because it can be mass produced in a way silicon cannot, and we’ve identified an additive that will make the material better.”
Neodymium is commonly used in microphones, speakers, lasers and decorative glass. Its ions are just the right size to nestle within a cubic perovskite crystal, and they carry three positive charges, which the scientists hypothesized would help hold negatively charged ions in place. To test the material’s ability to withstand high temperatures, the researchers heated solar cells with both materials to about 180 degrees. The solar cell with augmented perovskite held onto about 86% of its efficiency after more than 2,000 hours, while a standard perovskite device completely lost its ability to convert light to electricity during that time.
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