Dear all,

I have successfully simulated a Double-Gate (DG) structure using a simple drift-diffusion model with the following parameters:

• MuN: 150
• Gate Work Function: 5.03 eV

The simulation runs without any warnings or issues.

However, after introducing the autobbt model for Band-to-Band Tunneling (BBT), the simulation fails to converge, and I am encountering poor convergence. I am writing to ask if anyone can provide suggestions on how to improve the convergence or any settings that need to be adjusted when using this model?

Best regards