Bilayer photovoltaics

[martinwiemer]

Hello!
I would like to use oedes for the simulation of organic bilayer photovoltaic cells in the steady state. Does oedes already offer a model dedicated to this scenario? If not, which moduls of the software would I have to adopt for such simulations?

In some more detail:
Starting from the (effectively homogeneous) bulkheterojunction PV cell with its boundary conditions as included e.g. in the oedes examples, I would like to "spacially" seperatethe sets of transport equations for electrons and holes into two distinct half spaces (incl. different band gaps / absorption coefficients). As it shouldn’t make a difference in the steady state, I would be pleased incorporating generation and recombination of charge carriers at the domain interface either

• by some “charge source” terms $(\partial n/\partial t)_{gen./recomb.} = …$ (same for holes) within a finite width $h$ around the interface and $n = p = 0$ at the interface (las done e.g. by Barker et al., Phys. Rev. B 67:075205 (2003), https://link.aps.org/doi/10.1103/PhysRevB.67.075205),

• or by formulating it in terms of boundary conditions for the charge carrier fluxes (as done e.g. by Trukhanov et al., Phys. Rev. B 84:205318 (2011), https://link.aps.org/doi/10.1103/PhysRevB.84.205318).

Thank you very much in advance!