Hello, Professor Sun,

For "I" and "solid" these two parts are overlapping, "soild" is inside. I set them to different doping, and the problem I mentioned at the top will arise.By modifying the convergence criteria, it has improved but eventually diverged or similar to a state of stopping.

If I remove the "solid" part, I will still dope, but my doping area will only become a cube area, not the same as the area I want to set, so it will work successfully. I checked the relevant doping information on the official website, and I can't seem to set the constant doping of the desired area shape.

Ask a teacher to help me solve this problem.Looking forward to hearing from you.