Performance and Stability of Organic Trimethine Cyanine Dye—C60 Heterojunction Solar Cells

  • Gaëtan Wicht
  • Etienne Berner
  • Timo Jäger
  • Hui Zhang
  • Roland Hany
  • Frank Nüesch


The performance and stability of cyanine dye—C60 heterojunction solar cells were investigated both in the regular and the inverted geometry. While active layers absorption was stable under inert environment (N2), we observed a dependence on cell performances as a function of storage time for the regular geometry. This was attributed to the influence of the coating solvent on the cyanine dye film/buffer layer interface as well as the top electrode/buffer layer interface. Chlorobenzene as solvent and silver as low work function electrode were proposed as good candidates to improve stability. The inverted geometry was found to be another solution for the stability enhancement due to well protected active layers and more stable interfaces.


Organic photovoltaics Cyanine dyes Stability Interfaces 


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Copyright information

© Springer International Publishing Switzerland 2014

Authors and Affiliations

  • Gaëtan Wicht
    • 1
  • Etienne Berner
    • 1
  • Timo Jäger
    • 2
  • Hui Zhang
    • 1
  • Roland Hany
    • 1
  • Frank Nüesch
    • 1
  1. 1.Laboratory for Functional Polymers, EmpaSwiss Federal Institute for Materials Science and TechnologyDübendorfSwitzerland
  2. 2.Laboratory for Thin Films and Photovoltaics, EmpaSwiss Federal Institute for Materials Science and TechnologyDübendorfSwitzerland

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