Modeling tool: solar cell JV-curves simulations / HI ERN

Software: In-house FZJ-DCFI modeling tool for solar cell JV-curves simulations

Technique: optical modeling based on Transfer Matrix Formalism (TMF) and electronical modeling based on drift-diffusion (DD) equations

Contact person (Forschungszentrum Jülich): Olivier Ronsin (o.ronsin@fz-juelich.de)

Description: Steady-state, one-dimensional drift-diffusion code for the simulation JV-curves, coupled to a TMF calculation for the determination of light absorption. The code can be used not only to calculate the JV-curves of solar cell stacks under various operating conditions, but also to analyze in detail the various field profiles for a better understanding of the cell operation. It is coupled to a fitting tool allowing for fast and efficient fitting of experimental curves.


  • One dimensional continuum mechanics simulation framework for solar cell stack description
  • Optical (TMF) and electrical modeling (DD) for semiconductor solar cell stacks (organic, perovskite or inorganic) in steady-state solar cells stacks
  • Any number of layers, and in general heterogeneous material parameters possible
  • Boundary conditions: ohmic contacts, Schottky contacts or surface recombination
  • Sheet and shunt resistance included
  • Fitting tool allowing for multi-experiment fitting, as well as multi-parameter fitting
  • JV curve simulation within less than 1second and fitting within few minutes to few hours depending on the number of fitted parameters