Wide band gap perovskite solar cells suffer from halide segregation, which hampers their use in tandem solar cells. Now, researchers develop an additive with redox and defect passivating capabilities to suppress halide migration, enabling perovskite–organic tandems with over 25% efficiency.
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Djurišić, A.B. Breaking the reaction chain. Nat Energy 9, 363–364 (2024). https://doi.org/10.1038/s41560-024-01503-z
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DOI: https://doi.org/10.1038/s41560-024-01503-z
