Indacenodifuran-Based Non-Fullerene Electron Acceptors for Efficient Polymer Solar Cells

作者：He, Enfang; Wang, Xiaojing; Lu, Yi; Yin, Yuli; Guo, Fengyun; Gao, Shiyong; He, Zhicai^*; Zhao, Liancheng; Cao, Yong; Zhang, Yong^*

来源：ACS Applied Energy Materials, 2020, 3(7): 6133-6138.

DOI：10.1021/acsaem.0c01247

• indacenodifuran
• non-fullerene electron acceptors
• polymer solar cells
• fused-ring furan
• power conversion efficiency

Two indaceno[1,2-b:5,6-b']difuran-based non-fullerene acceptors (NFAs) IDF-IC and IDF-4F were designed and synthesized. IDF-IC and IDF-4F showed strong absorptions in the visible and near-infrared (NIR) region with narrow bandgaps of 1.56-1.62 eV. The power conversion efficiencies (PCEs) of PM6:IDF-IC and PM6:IDF-4F devices were 7.80% and 7.81%, respectively, with open-circuit voltages (V-oc's) of 0.905 and 0.736 V, short-circuit current densities (J(sc)'s) of 14.55 and 17.49 mA/cm(2), and fill factors (FFs) of 59% and 61%. These results demonstrate that the fused-ring furan-based NFAs could be one of the promising building blocks in constructing high performance NFAs.

• 单位
  郑州大学; y