Further improvements in perovskite solar cells (PSCs) require better control of ionic defects in the perovskite photoactive layer during the manufacturing stage and their usage^1-5. Here, we report a living passivation strategy using a hindered urea/thiocarbamate bond^6-8 Lewis acid-base material (HUBLA), where dynamic covalent bonds with water and heat-activated characteristics can dynamically heal the perovskite to ensure device performance and stability. Upon exposure to moisture or heat, HUBLA generates new agents and further passivates defects in the perovskite. This passivation strategy achieved high-performance devices with a power conversion efficiency (PCE) of 25.1%. HUBLA devices retained 94% of their initial PCE for approximately 1500 hours of aging at 85 °C in N₂ and maintained 88% of their initial PCE after 1000 hours of aging at 85 °C and 30% relative humidity (RH) in air.

钙钛矿太阳能电池（PSC）的进一步改进需要在制造阶段及其使用过程中更好地控制钙钛矿光敏层中的离子缺陷 ^1-5 。在这里，我们报告了一种使用受阻脲/硫代氨基甲酸酯键 ^6-8 路易斯酸碱材料（HUBLA）的活性钝化策略，其中与水的动态共价键和热激活特性可以动态修复钙钛矿，以确保器件性能和稳定性。当暴露于湿气或高温时，HUBLA 会产生新的试剂并进一步钝化钙钛矿中的缺陷。这种钝化策略实现了功率转换效率 (PCE) 为 25.1% 的高性能器件。 HUBLA 器件在 N ₂ 中于 85 °C 老化约 1500 小时后，保留了 94% 的初始 PCE；在 85 °C 和 30% 相对湿度下老化 1000 小时后，仍保留了 88% 的初始 PCE (RH) 空气中。