Wang Shuo, Gong Xue-Yuan, Li Ming-Xin, Li Ming-Hua, Hu Jin-Song
Beijing National Laboratory for Molecular Sciences (BNLMS), Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China.
College of Chemical Engineering, Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China.
JACS Au. 2024 Aug 31;4(9):3400-3412. doi: 10.1021/jacsau.4c00615. eCollection 2024 Sep 23.
Perovskite solar cells (PSCs) are recognized as one of the most promising next-generation photovoltaics, primarily due to their exceptional power conversion efficiency, ease of processing, and cost-effectiveness. Despite these advantages, challenges remain in achieving high-quality films and ensuring the long-term stability of PSCs, which hinder their widespread commercialization. Polymers, characterized by multifunctional groups, superior thermal stability, flexible long chains, and cross-linking capabilities, offer significant potential to enhance the performance and reliability of PSCs. This review comprehensively presents the multifaceted roles that polymers play in PSCs. Through carefully controlling interactions between polymers and perovskites, crucial aspects such as film crystallization kinetics, carrier transport process, ion migration issues, and mechanical properties under bending can be effectively regulated to maximize the device performance. Furthermore, the hydrophobic properties and strong chelated cross-linking networks of polymers significantly enhance the stability of PSCs under various environmental conditions while effectively mitigating lead leakage, thereby addressing environmental concerns and long-term durability. Moreover, this Perspective identifies potential pathways for further advancing polymer-based strategies in PSC applications.
钙钛矿太阳能电池（PSCs）被认为是最具前景的下一代光伏技术之一，主要是因为其卓越的功率转换效率、易于加工以及成本效益。尽管有这些优点，但在制备高质量薄膜和确保PSCs的长期稳定性方面仍存在挑战，这阻碍了它们的广泛商业化。聚合物具有多功能基团、优异的热稳定性、灵活的长链和交联能力，在提高PSCs的性能和可靠性方面具有巨大潜力。本文综述全面介绍了聚合物在PSCs中所起的多方面作用。通过仔细控制聚合物与钙钛矿之间的相互作用，可以有效调节诸如薄膜结晶动力学、载流子传输过程、离子迁移问题以及弯曲状态下的机械性能等关键方面，从而使器件性能最大化。此外，聚合物的疏水特性和强螯合交联网络显著提高了PSCs在各种环境条件下的稳定性，同时有效减轻铅泄漏，从而解决了环境问题和长期耐久性问题。此外，本观点还确定了在PSCs应用中进一步推进基于聚合物的策略的潜在途径。
