i want to simulate a graphene device using lumerical to see the optical response of the different contact shapes. when i try to make the PEC contacts to touch the graphene layer (which is a 2d rectangle) lumerical gives an error indicating that PEC cannot be in the same cell with a material modeled by surface conductivity model. if i use the finite thickness graphene model i think the simulation will need 15 days to complete with 2nm graphene thickness (contact thickness is about 60 nm and the other metal features have 2um thickness, frequency window of the simulation is 0.2THz-1THz)
one more question, are the material fits for gold reliable in the freq. region that i mentioned since there are no experimental data? i attached the picture below. using gold prevents the error occurring but i want to know if there are any possibility of using PEC as contact material.