Polymer strategy has been widely adopted for efficient, stable, and hysteresis-reduced perovskite solar cells (PSCs). Herein, a comprehensive review of polymer strategy is provided, by categorizing the polymers as additives in the perovskite active layer and charge transport layer, as an interfacial layer, and as an encapsulation layer. In addition, the various polymers adopted in polymer strategy and the diverse ways to introduce them into PSCs are summarized. Moreover, the functions of polymers in each layer, such as morphology modulation, energy level alignment adjustment, non-radiative recombination suppression, stability and flexibility enhancement, are emphasized, and the related underlying mechanisms are discussed. Furthermore, future research directions to optimize polymer strategy for further improving the efficiency and stability of PSCs is proposed.

聚合物策略已被广泛用于高效，稳定和减少磁滞的钙钛矿太阳能电池（PSC）。本文中，通过将聚合物分类为钙钛矿活性层和电荷传输层中的添加剂，界面层和包封层，对聚合物策略进行了全面回顾。此外，总结了聚合物策略中采用的各种聚合物以及将其引入PSC的多种方法。此外，强调了聚合物在每一层中的功能，例如形态调制，能级排列调整，非辐射重组抑制，稳定性和柔韧性增强，并讨论了相关的潜在机理。此外，