Learning Forum

[Robin Schot]

I am trying to simulate perovskite-silicon solar cells in Lumerical Device, for which band-to-band tunneling is required to connect the two subcells. The software supports two models, Hurkx and Schenk, but it is unclear for me if and how I can obtain the required parameters for these models. Does anybody know how to work with this? Thanks a lot!

[Amrita Pati]

Hi Robin,

I would like to point out that the CHARGE solver solves the semiconductor Drift-Diffusion equation to calculate the relevant results. So, if you think that the physics underlying the perovskite material can be described by this model then only I will recommend using CHARGE for this simulation. Also, I don’t think we have any perovskites in the Material Database, so you will have to obtain all the paramters including the ones linked to the band-to-band tunneling model from references.

Regards,
Amrita

 

[Robin Schot]

Dear Amrita, thanks for your reply. In my case, the tunneling occurs at an ITO-PTAA interface, which corresponds to a n-p junction. Should I, in this case, substitute parameters for both of these materials? In my experience, finding these paramaters is very challening; do you have any suggestions for that?

With kind rgeards,

Robin