Perovskite solar cells have made significant progress in achieving high power conversion efficiency (>26%) in the past decade. However, achieving long-term stability comparable to established silicon solar cells is still a significant challenge, requiring further investigation into degradation mechanisms and continued exploration of interface engineering strategies. Here we review stability at the interfaces between perovskite and charge transport layers. These interfaces are particularly vulnerable to defects and degradation under external stresses such as heat, light, and bias, further compounded by their ionic nature and thermal expansion mismatch. To address these issues, strategies such as the use of additives, organic self-assembled monolayers, and low-dimensional perovskites have been developed to improve interface stability. These approaches enhance crystallinity, reduce defect-related recombination, and improve mechanical toughness.

中文翻译：

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界面和异质结构对钙钛矿基太阳能电池稳定性的影响


钙钛矿太阳能电池在过去十年中在实现高功率转换效率 （>26%） 方面取得了重大进展。然而，实现与已建立的硅太阳能电池相当的长期稳定性仍然是一项重大挑战，需要进一步研究降解机制并继续探索界面工程策略。在这里，我们回顾了钙钛矿和电荷传输层之间界面的稳定性。这些界面在热、光和偏压等外部应力下特别容易受到缺陷和降解的影响，而它们的离子性质和热膨胀不匹配则进一步加剧了这种情况。为了解决这些问题，已经开发了诸如使用添加剂、有机自组装单层和低维钙钛矿等策略来提高界面稳定性。这些方法增强了结晶度，减少了与缺陷相关的复合，并提高了机械韧性。