Ethylammonium iodide (EAI; CAS Number: 506-58-1) is an organic halide salt used in perovskite-based systems. Highly efficient perovskite solar cells are obtained by treating the photovoltaic devices with ethylammonium iodide used as surface passivation agent (Alharbi et al., 2019).
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Alharbi, E.A., Alyamani, A.Y., Kubicki, D.J., Uhl, A.R., Walder, B.J., Alanazi, A.Q., Luo, J., Burgos-Caminal, A., Albadri, A., Albrithen, H., Alotaibi, M.H., Moser, J.-E., Zakeeruddin, S.M., Giordano, F., Emsley, L., Grätzel, M., 2019. Atomic-level passivation mechanism of ammonium salts enabling highly efficient perovskite solar cells. Nature Communications 10, 3008