Perovskite-silicon tandem solar cells are considered a key technology for photovoltaics. Because of their design, they use sunlight more efficiently than conventional silicon cells. While the upper perovskite layer absorbs the high-energy blue part of the spectrum, the silicon layer underneath captures the red part. The interplay of the two materials allows significantly more solar energy to be harvested.
Molecular fine-tuning boosts tandem solar cell efficiency to 31.4%
