Pyrrolidinium iodide (CAS Number: 45361-12-4) is an organic ammonium halide salt used as a perovskite precursor in the preparation of perovskite-based opto-electronic devices. The addition of Pyrrolidinium iodide to the precursor solution afforded prolonged moisture resistance and excellent thermal stability to the resulting pyrrolidinium ring-based perovskite (Fan Xu et al., 2019).
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Fan Xu, A., Taoran Wang, R., Wenjuan Yang, L., Liu, N., Chen, Q., LaPierre, R., Goktas, N.I., Xu, G., 2019. Pyrrolidinium containing perovskites with thermal stability and water resistance for photovoltaics. Journal of Materials Chemistry C 7, 11104–11108.