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A green solvent increases the stability of a perovskite ink for scalable processing - Nature Sustainability
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A scalable fabrication method using a green solvent, γ-valerolactone, is developed to prepare high-quality formamidinium lead iodide perovskite films. Interactions between the solvent and precursor materials stabilize the perovskite ink, which has a long shelf life and wide processing window. Passivation of the films with tributylmethylammonium enables the realization of a high-efficiency perovskite solar module.
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