I’m trying to simulate the electric field of a coplanar waveguide structure in Device using the Charge Transport solver, but I don’t have a good idea of how large to make the simulation domain, or how fine I need to make my mesh. If I make the simulation domain too large, I get the error message shown in the attached .pdf.
If I make the simulation domain small enough to avoid the attached error, I get what seems to be inconsistent E-field results. Example: when everything is grounded (including the Si substrate), I still have a fairly significant E-field between the Au regions. When the voltage moves up to 0.5 V and 1 V, the field appears to “jump” between very different solutions. This does not appear to be accurate.
I’ve attached my script for this simulation(the .lsf file), please let me know if there’s anything you think I can do to fix these results.
DC_Efield_CPW_SCRIPT.lsf (5.0 KB)
Device_Error.pdf (95.4 KB)