Suppressing hydrogen bonds and controlling surface dipole: effective passivation for hydrophobic perovskite photoabsorber layers in solar cells

Perovskite passivation is instrumental for state-of-the-art perovskite solar cells; however, the passivation effect has not been understood in detail. Herein, wettability measurements with selected solutions reveal that passivation is crucial to suppress hydrogen bonds for hydrophobic perovskite surfaces, advocating a novel strategy to render perovskite hydrophobic efficiently.

Automated summary

This study demonstrates the importance of passivation for perovskite solar cells by investigating the effect of wettability on hydrophobic perovskite surfaces. The results suggest a novel strategy to efficiently render perovskite hydrophobic by suppressing hydrogen bonds.