Jump to main content
Jump to site search

Issue 36, 2016
Previous Article Next Article

High open circuit voltage polymer solar cells enabled by employing thiazoles in semiconducting polymers

Author affiliations

Abstract

We investigate the effect of introducing thiazole π-spacers in wide bandgap semiconducting copolymers based on benzothiadiazole with either benzodithiophene or indacenodithiophene. Thiazole-containing polymers show similar optical bandgaps but drastically downshifted frontier orbital levels compared to the corresponding thiophene derivatives as a result of the more electronegative imine nitrogen. Consequently, they provide an enhanced open-circuit voltage (Voc) of about 0.2 V in bulk heterojunction polymer solar cells. Notably, the Voc approaches 0.95 V for polymers with an optical bandgap below 1.75 eV. Despite the favourable energetics, the performance of the thiazole-containing polymers in solar cells is currently restricted by the relatively low molecular weight, which results in a sub-optimal bulk heterojunction morphology.

Graphical abstract: High open circuit voltage polymer solar cells enabled by employing thiazoles in semiconducting polymers

Back to tab navigation

Supplementary files

Publication details

The article was received on 21 Jun 2016, accepted on 24 Aug 2016 and first published on 25 Aug 2016


Article type: Paper
DOI: 10.1039/C6PY01083K
Author version
available:
Download author version (PDF)
Polym. Chem., 2016,7, 5730-5738
  • Open access: Creative Commons BY license
  •   Request permissions

    High open circuit voltage polymer solar cells enabled by employing thiazoles in semiconducting polymers

    C. Duan, J. J. van Franeker, M. M. Wienk and R. A. J. Janssen, Polym. Chem., 2016, 7, 5730
    DOI: 10.1039/C6PY01083K

    This article is licensed under a Creative Commons Attribution 3.0 Unported Licence. Material from this article can be used in other publications provided that the correct acknowledgement is given with the reproduced material.

    Reproduced material should be attributed as follows:

    • For reproduction of material from NJC:
      [Original citation] - Published by The Royal Society of Chemistry (RSC) on behalf of the Centre National de la Recherche Scientifique (CNRS) and the RSC.
    • For reproduction of material from PCCP:
      [Original citation] - Published by the PCCP Owner Societies.
    • For reproduction of material from PPS:
      [Original citation] - Published by The Royal Society of Chemistry (RSC) on behalf of the European Society for Photobiology, the European Photochemistry Association, and RSC.
    • For reproduction of material from all other RSC journals:
      [Original citation] - Published by The Royal Society of Chemistry.

    Information about reproducing material from RSC articles with different licences is available on our Permission Requests page.

Search articles by author

Spotlight

Advertisements