Perovskite solar cells (PSCs) emerged as a promising photovoltaic technology because of the great progress in power conversion efficiency (PCE). However, their intrinsic chemical instability and the unrevealed reliability limit their deployment in commercialization. In particular, the reliability of solar panels, associated with strength against external forces such as hailstones or wind load, is a critical assessment to ensure constant operation in the lifespan of the warranty. However, the mechanical properties connecting impact resistance are rarely reported for perovskite photovoltaics. In this work, we emphasize the mechanical properties improvement by incorporating a natural one-dimensional material, ethyl cellulose (EC), within the perovskite films, working as the fiber-bridging component to increase the toughness of the intrinsically brittle perovskite crystals. As a result, the EC-incorporated perovskite layer exhibited much-improved mechanical properties, with Young’s modulus 3 times higher than that of pristine film, and showed robust stability under various harsh conditions.

由于功率转换效率（PCE）的巨大进步，钙钛矿太阳能电池（PSC）成为一种很有前途的光伏技术。然而，它们固有的化学不稳定性和未公开的可靠性限制了它们在商业化中的应用。特别是，太阳能电池板的可靠性与抵抗冰雹或风荷载等外力的强度相关，是确保在保修期内持续运行的关键评估。然而，钙钛矿光伏电池的机械性能与抗冲击性相关的报道很少. 在这项工作中，我们强调通过在钙钛矿薄膜中加入天然一维材料乙基纤维素 (EC) 来提高机械性能，作为纤维桥接成分来增加固有脆性钙钛矿晶体的韧性。结果，掺入 EC 的钙钛矿层表现出大大改善的机械性能，杨氏模量比原始薄膜高 3 倍，并且在各种恶劣条件下表现出稳健的稳定性。