Wang Zhibo, Zhu Shenbo, Li Tongzi, Liang Wenting, Zhou Jiang, Hu Huawei
State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai 201620, P. R. China.
ACS Mater Au. 2024 Nov 8;5(1):57-71. doi: 10.1021/acsmaterialsau.4c00099. eCollection 2025 Jan 8.
The integration of fluorinated benzothiadiazole (FBT) into donor-acceptor (D-A) copolymers represents a major advancement in the field of organic solar cells (OSCs). The fluorination process effectively fine-tunes the energy levels, reduces the highest occupied molecular orbital levels, and enhances the open-circuit voltages of the polymers. Furthermore, fluorination improves molecular packing and crystallinity, which significantly boosts the charge transport and overall device performance. This review provides a detailed analysis of the progress made with FBT-based polymers in OSCs, classifying these materials according to their copolymerization units. It discusses the design strategies and structure-property relationships that have emerged as well as the current challenges and future directions for optimizing these polymers. By offering a comprehensive overview of the existing research, this review aims to facilitate the development of high-performance FBT-based organic photovoltaic materials, ultimately contributing to the advancement of sustainable energy solutions.
将氟化苯并噻二唑（FBT）整合到供体-受体（D-A）共聚物中是有机太阳能电池（OSC）领域的一项重大进展。氟化过程有效地微调了能级，降低了最高占据分子轨道能级，并提高了聚合物的开路电压。此外，氟化改善了分子堆积和结晶度，这显著提高了电荷传输和整体器件性能。本综述详细分析了基于FBT的聚合物在OSC中的进展，根据其共聚单元对这些材料进行分类。它讨论了已出现的设计策略和结构-性能关系，以及优化这些聚合物的当前挑战和未来方向。通过全面概述现有研究，本综述旨在促进高性能基于FBT的有机光伏材料的开发，最终推动可持续能源解决方案的进步。
