10/05/2026
"The winning architecture, ALD beneath and spin-coating above, delivered a power conversion efficiency exceeding 22 percent, comfortably outperforming both single-layer alternatives and the reversed bilayer, and box plots across multiple devices showed the improvement was reproducible"
https://bioengineer.org/layer-order-surprise-atomic-deposited-tin-oxide-boosts-perovskite-solar-cells-only-when-hidden/