Liu Tingfu, Liu Jiaqing, Li Yiming, Gao Xiaomei, Wang Meng, Zhou Zehua, He Haiyan, Zhang Qing, Li Lijun, Huang Huajie, Xiao Jinchong, Ma Chang-Qi
College of Materials Science and Engineering, Hohai University, Nanjing 210098, China.
i-Lab & Printable Electronics Research Center, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, Suzhou 215123, P.R. China.
ACS Appl Mater Interfaces. 2024 Sep 25;16(38):50916-50925. doi: 10.1021/acsami.4c11805. Epub 2024 Sep 16.
The use of harmful halogenated or aromatic solvents such as chloroform (CF), chlorobenzene (CB), and -xylene (-XY) is one of the greatest barriers to the industrial-scale manufacturing of high-performance organic solar cells (OSCs). Therefore, it is necessary to eliminate the effects of these solvents to ensure practical feasibility of OSCs. We found that the anthracene-terminated polymer donor and small-molecule acceptor BO-4Cl had good solubility in 3-methylthiophene (3-MeT). There were no toxicity labels in the SDS and exposure control limits for 3-MeT. An overall power conversion efficiency of 16.87% was achieved by using 3-MeT as the solvent for solar cell fabrication, which was higher than that of the cells made from CF (16.18%) and -XY (15.69%). The best OSC based on PM6:D18:L8-BO and fabricated with 3-MeT exhibited a high PCE of 18.13%, which is one of the highest values for cells fabricated from halogen-free solvents. These results indicate that 3-MeT is an eco-friendly and low-toxicity solvent for the sustainable fabrication of the OSC active layer.
使用有害的卤代或芳香族溶剂，如氯仿（CF）、氯苯（CB）和二甲苯（-XY），是高性能有机太阳能电池（OSC）进行工业规模制造的最大障碍之一。因此，有必要消除这些溶剂的影响，以确保OSC的实际可行性。我们发现，蒽封端的聚合物给体和小分子受体BO-4Cl在3-甲基噻吩（3-MeT）中具有良好的溶解性。3-MeT的安全数据表（SDS）中没有毒性标签，也没有暴露控制限值。通过使用3-MeT作为太阳能电池制造的溶剂，实现了16.87%的整体功率转换效率，高于由CF（16.18%）和-XY（15.69%）制成的电池。基于PM6:D18:L8-BO并使用3-MeT制造的最佳OSC表现出18.13%的高功率转换效率（PCE），这是由无卤溶剂制造的电池的最高值之一。这些结果表明，3-MeT是用于可持续制造OSC活性层的环保且低毒的溶剂。
