Compared with prevailing photovoltaic polymers with complex structures and tedious synthesis, polythiophenes possess a greater commercial promise. However, their photovoltaic performances are rather poor due to mismatched energy levels and unfavorable mixing with state-of-the-art non-fullerene acceptors. In a recent Joule article, Duan and colleagues developed a new series of polythiophene-based donors (P5TCN-Fx) via just four steps and achieved a record-high efficiency that surpasses 17%. Furthermore, both polymer solubility and molecular miscibility were found to play crucial roles in achieving this unprecedented performance. The future perspectives are discussed.

与结构复杂、合成繁琐的主流光伏聚合物相比，聚噻吩具有更大的商业前景。然而，由于不匹配的能级和不利于与最先进的非富勒烯受体混合，它们的光伏性能相当差。在最近的Joule文章中，Duan 及其同事仅通过四个步骤开发了一系列新的基于聚噻吩的供体 (P5TCN-Fx)，并实现了超过 17% 的创纪录效率。此外，发现聚合物溶解度和分子混溶性在实现这种前所未有的性能方面起着至关重要的作用。讨论了未来的前景。