Scientists achieve 25.4% efficiency in perovskite solar cells with enhanced stability using multivalent ligands

Researchers have used multivalent amidinium ligands to boost perovskite solar cell efficiency to 25.4%, achieving over 95% stability after 1,100 hours at 85? C. The proposed approach enables controlled low-dimensional passivation layers, offering a practical route for durable, large-area perovskite devices.An international group of researchers has used multivalent amidinium ligands as an alternative to conventional monovalent ammonium ligands for passivation of perovskite films. When used in an inverted 2D/3D large area perovskite solar cell, the ligands contributed to achieved a cell power conversion ...

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