Conjugated polymeric zwitterions as efficient interlayers in organic solar cells

Adv Mater. 2013 Dec 17;25(47):6868-73. doi: 10.1002/adma.201302477. Epub 2013 Sep 18.


Conjugated polymeric zwitterions, when utilized as interlayer materials in bulk heterojunction organic solar cells, lead to significantly enhanced power conversion efficiencies. The electrostatic model of self-aligning dipolar side groups in the vicinity of the metal surface rationalizes the effects of reduced cathode work function, a key factor behind the observed enhanced efficiency.

Keywords: Organic solar cells; electrostatic self-alignment of dipoles; interfacial dipole; ultraviolet photoelectron spectroscopy; zwitterionic polymers.

Publication types

  • Research Support, American Recovery and Reinvestment Act
  • Research Support, U.S. Gov't, Non-P.H.S.

MeSH terms

  • Electric Power Supplies
  • Electrodes
  • Polymers / chemistry*
  • Solar Energy*
  • Thiadiazoles / chemistry
  • Thiophenes / chemistry


  • Polymers
  • Thiadiazoles
  • Thiophenes
  • benzo-1,2,3-thiadiazole