SEARCH

SEARCH BY CITATION

Keywords:

  • low bandgap polymers;
  • polymer solar cells;
  • two-dimensional;
  • order structure
Thumbnail image of graphical abstract

A systematic molecular design process from PBDTTT-S to PBDTDTTT-S-T, a high-performance semiconducting polymer for organic photovoltaics, has been achieved by enhancing structural order, self-assembly and carrier mobility. Solar cells made from PBDTDTTT-S-T blended with PC70BM show a power conversion efficiency (PCE) of 7.81%, which is 25% higher than that of the parent PBDTTT-S.