Predicting Charge flow in Device

I am trying to predict the effect of charge flow and mobility with grating in the ITO structure. I am using InN as an semiconductor to replicate the properties of ITO in for use in organic solar cells for diffraction of light. I just want to ask about the method through which I can get see the charge flow and get the effect on resistance and charge mobility.

My design is attached

Hi @Arastu. It looks like this question is very similar to this other post you made earlier:

Is there any reason for this new post or can we continue the discussion in the old post?

The design is a bit different than the last one, but yeah the discussion from the last post can be continued. I’ll therefore ask the similar question in reply to the last post.