Perovskite precursor inks suffer various forms of degradation, such as iodide anion oxidation and organic cation breakdown, hindering reliable perovskite solar cell manufacturing. Here we report that benzylhydrazine hydrochloride (BHC) not only retards the buildup of iodine as previously reported but also prevents the breakdown of organic cations. Through investigating BHC and iodine chemical reactions, we elucidate protonation and dehydration mechanisms, converting BHC to harmless volatile compounds, thus preserving perovskite film crystallization and solar cell performance. This inhibition effect lasts nearly a month with minimal BHC, contrasting control inks without BHC where organic cations fully react in less than a week. This enhanced understanding, from additive stabilization to end products, promises improved perovskite solar cell production reliability.

中文翻译：

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苄肼对可扩展钙钛矿前驱体油墨的多重稳定作用，以提高钙钛矿太阳能电池的产量


钙钛矿前驱体墨水会遭受各种形式的降解，例如碘化物阴离子氧化和有机阳离子分解，阻碍钙钛矿太阳能电池的可靠制造。在此，我们报告称，盐酸苯甲基肼 (BHC) 不仅可以像之前报道的那样延缓碘的积累，而且还可以防止有机阳离子的分解。通过研究六六六和碘的化学反应，我们阐明了质子化和脱水机制，将六六六转化为无害的挥发性化合物，从而保持钙钛矿薄膜结晶和太阳能电池性能。这种抑制效果在使用最少的六六六的情况下可持续近一个月，而不含六六六的对照油墨则在不到一周的时间内有机阳离子完全反应。这种从添加剂稳定性到最终产品的加深理解，有望提高钙钛矿太阳能电池生产的可靠性。