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Aug 24, 2023, 11:09 am161 pts
Ars Technica
Enlarge / RoboMapper in action. (credit: Aram Amassian) Earlier this year, two-layer solar cells broke records with 33 percent efficiency. The cells are made of a combination of silicon and a material called a perovskite. However, these tandem solar cells are still far from the theoretical limit of around 45…
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