Perovskite semiconductors have emerged as competitive candidates for photovoltaic applications due to their exceptional optoelectronic properties. However, the impact of moisture instability on perovskite films is still a key challenge for perovskite devices. While substantial effort is focused on preventing moisture interaction during the fabrication process, it is demonstrated that low moisture sensitivity, enhanced crystallization, and high performance can actually be achieved by exposure to high water content (up to 25 vol%) during fabrication with an aqueous‐containing perovskite precursor. The perovskite solar cells fabricated by this aqueous method show good reproducibility of high efficiency with average power conversion efficiency (PCE) of 18.7% and champion PCE of 20.1% under solar simulation. This study shows that water–perovskite interactions do not necessarily negatively impact the perovskite film preparation process even at the highest efficiencies and that exposure to high contents of water can actually enable humidity tolerance during fabrication in air.

中文翻译：

---

用于高效钙钛矿太阳能电池的含水前体溶液

由于其卓越的光电特性，钙钛矿半导体已成为光伏应用的竞争候选者。然而，水分不稳定性对钙钛矿薄膜的影响仍然是钙钛矿器件的关键挑战。虽然大量努力集中在制造过程中防止水分相互作用，但事实证明，通过在使用水性溶液制造过程中暴露于高含水量（高达 25 vol%），实际上可以实现低湿度敏感性、增强结晶和高性能。 ‐含有钙钛矿前体。通过这种水法制备的钙钛矿太阳能电池表现出良好的高效率再现性，平均功率转换效率（PCE）为18.7％，在太阳模拟下冠军PCE为20.1％。这项研究表明，即使在最高效率下，水-钙钛矿相互作用也不一定会对钙钛矿薄膜制备过程产生负面影响，并且暴露于高含量的水实际上可以在空气中制造过程中实现耐湿性。