Amidination of Ligands for Chemical and Field-Effect Passivation Stabilizes Perovskite Solar Cells

Amidinium ligands exploit resonance-enhanced N–H bonds to resist deprotonation under light and thermal stress, reducing the deprotonation equilibrium constant >10-fold and enabling certified 26.3% PCE with ≥90% PCE retention after 1100 h of continuous 1-sun MPP operation at 85 °C.

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Recommended citation: Yang, Y.; Chen, H.; Liu, C.; Xu, J.; Huang, C.; Malliakas, C. D.; Wan, H.; Bati, A. S. R.; Wang, Z.; Reynolds, R. P.; Gilley, I. W.; Kitade, S.; Wiggins, T. E.; Zeiske, S.; Suragtkhuu, S.; Batmunkh, M.; Chen, L. X.; Chen, B.^*; Kanatzidis, M. G.^*; Sargent, E. H.^* Amidination of Ligands for Chemical and Field-Effect Passivation Stabilizes Perovskite Solar Cells. Science 2024, 386 (6724), 898–902.
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