Application of Photocurrent Model on Polymer Solar Cells Under Forward Bias Stress

Antonio Rizzo, Lorenzo Torto, Nicola Wrachien, Michael Corazza, Frederik C Krebs, Suren Gevorgyan, Andrea Cester

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We performed a constant current stress at forward bias on organic heterojunction solar cells. We measured current voltage curves in both dark and light at each stress step to calculate the photocurrent. An existing model applied to photocurrent experimental data allows the estimation of several parameters such as generation, recombination, dissociation rate, and nearly zero field voltage within the active layer as a function of the stress time. The analysis of extrapolated parameters shows that the stress mainly affects the recombination rate of the polaron charge transfer states.
Original languageEnglish
JournalIEEE Journal of Photovoltaics
Issue number6
Pages (from-to)1542-1548
Publication statusPublished - 2017


  • Annealing
  • Current
  • Heterojunctions
  • Organic semiconductors
  • Photovoltaic cells
  • Roll-to-roll
  • Solar energy
  • Stress


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