Organic Solar Cells Based on a 2D Benzo[1,2-b:4,5-b']difuran-Conjugated Polymer with High-Power Conversion Efficiency

Adv Mater. 2015 Nov 18;27(43):6969-75. doi: 10.1002/adma.201503023. Epub 2015 Sep 30.

Abstract

A novel 2D benzodifuran (BDF)-based copolymer (PBDF-T1) is synthesized. Polymer solar cells fabricated with PBDF-T1 show high power conversion efficiency of 9.43% and fill factor of 77.4%, which is higher than the performance of its benzothiophene (BDT) counterpart (PBDT-T1). These results provide important progress for BDF-based copolymers and demonstrate that BDF-based copolymers can be competitive with the well-studied BDT counterparts via molecular structure design and device optimization.

Keywords: benzodifuran; benzodithiophene; efficiency; fill factor; organic solar cells.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Benzofurans / chemistry*
  • Electric Power Supplies*
  • Models, Molecular
  • Molecular Conformation
  • Polymers / chemistry*
  • Sunlight*

Substances

  • Benzofurans
  • Polymers