Abstract Due to the advantages such as being low cost, light weight, and flexible as well as having low toxicity, organic solar cells (OSCs) have attracted extensive interest. The field of OSCs progressed dramatically after the emergence of non-fullerene small molecule acceptors. In addition to the development of these acceptor materials, a key driver in the rapid progress of OSC research was the introduction of the PBDB-T polymer and its derivatives. In this review, we first give a brief overview of the structural features of PBDB-T congeners and the strategies used to design these polymers. The interesting aggregation effects of PBDB-T congeners in solution and solid-states are highlighted. Recent advances in the morphological understanding OSCs based on PBDB-T congeners are discussed using selected examples. In addition, the versatile applications of PBDB-T congeners in OSC devices, including interfacially modified binary, ternary and tandem devices, are also summarized. Importantly, we assess the energy loss and provide a meta-analysis of a library of high-performance PBDB-T type polymers, which are compared with other types of conjugated polymers. Finally, the remaining questions and the prospects of these exciting polymers are suggested.

中文翻译：

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PBDB-T 及其衍生物：一系列聚合物供体使有机光伏发电效率超过 17%

摘要 有机太阳能电池（OSCs）由于具有成本低、重量轻、柔性好、毒性低等优点而受到广泛关注。在非富勒烯小分子受体出现后，OSCs 领域取得了巨大进展。除了这些受体材料的开发之外，OSC 研究快速进展的一个关键驱动因素是 PBDB-T 聚合物及其衍生物的引入。在这篇综述中，我们首先简要概述了 PBDB-T 同源物的结构特征以及用于设计这些聚合物的策略。突出显示了 PBDB-T 同系物在溶液和固态中的有趣聚集效应。使用选定的例子讨论了基于 PBDB-T 同源物的形态学理解 OSCs 的最新进展。此外，还总结了 PBDB-T 同类物在 OSC 设备中的多功能应用，包括界面修饰的二元、三元和串联设备。重要的是，我们评估了能量损失并提供了高性能 PBDB-T 型聚合物库的荟萃分析，并将其与其他类型的共轭聚合物进行了比较。最后，提出了这些令人兴奋的聚合物的剩余问题和前景。