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High Resolution Image Download MS PowerPoint Slide Non-negligible K, acetate (OAc – ), and nitrate (NO 3 – ) impurities have been identified in commercially available PbI 2 reagents, plausibly remnant from synthesis. Here, we characterize the individual impact of each of these impurities on the relative rate of the methylammonium (MA) condensation reaction with formamidinium (FA) to release N -methylformamidinium (MFA), a main degradation pathway of mixed-cation halide perovskite inks, emphasizing the need to better control purity in halide perovskites.
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Kerner et al. (2022) studied this question.
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