Menu

Discussion Forum

New Discussion
Filter

Discussion Closed This discussion was created more than 6 months ago and has been closed. To start a new discussion with a link back to this one, click here.

'Undefined function value' in Semiconductor module

Posted Apr 11, 2017, 4:23 a.m. EDT Semiconductor Devices Version 5.1 0 Replies

Ton Nguyen
Send Private Message Flag post as spam

Please login with a confirmed email address before reporting spam

Hi, I'm using the MOSFET example from the Application Library and I would like to know its behavior at cryogenic temperature (around 4 K for liquid helium). At low temperatures the solution no longer converges, returning the error message 'Predicted solution guess leads to undefined function value'. Does anyone have a suggestion for troubleshooting this?

I also tried going into Equation View and setting all variables related to 'thermal diffusion' to zero as an approximation, but that doesn't make a difference.
0 Replies Last Post Apr 11, 2017, 4:23 a.m. EDT
COMSOL Moderator

Hello Ton Nguyen

Your Discussion has gone 30 days without a reply. If you still need help with COMSOL and have an on-subscription license, please visit our Support Center for help.

If you do not hold an on-subscription license, you may find an answer in another Discussion or in the Knowledge Base.

Note that while COMSOL employees may participate in the discussion forum, COMSOL® software users who are on-subscription should submit their questions via the Support Center for a more comprehensive response from the Technical Support team.

Suggested Content