Reordering the layers in solar-cell modules can help improve efficiency

https://techxplore.com/news/2022-08-reordering-layers-solar-cell-modules-efficiency.html

"optical redesign of the module through refractive-index engineering. By moving a film of magnesium fluoride from the top of the cell to the top of the front glass, they reduced the refractive index mismatch, thus achieving efficient light in-coupling... enables highest short circuit current density... drawn from device for monolithic perovskite/silicon tandem solar modules, resulting in a power conversion efficiency increase from 25.7% to 26.2%"

Related: Researchers create flexible monocrystalline silicon solar cells

https://techxplore.com/news/2023-05-flexible-monocrystalline-silicon-solar-cells.html