{"id":236411,"date":"2022-09-27T16:59:28","date_gmt":"2022-09-27T16:59:28","guid":{"rendered":"\/forum\/forums\/reply\/236411\/"},"modified":"2022-09-27T16:59:28","modified_gmt":"2022-09-27T16:59:28","slug":"236411","status":"publish","type":"reply","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/236411\/","title":{"rendered":"Reply To: Divergence caused by High field mobility ?"},"content":{"rendered":"<p>&lt;p&gt;When the high field mobility&nbsp; is enbaled, many a time the simulation can diverge, due to some reasons. I would suggest to read this article: https:\/\/optics.ansys.com\/hc\/en-us\/articles\/8355464963987-Troubleshooting-convergence-errors-in-CHARGE&nbsp; It has some solutions for this case.&lt;\/p&gt;&lt;p&gt;Have you tested zero bias? if it can run successfully, it means the field might be too high and finer mesh is needed.&lt;\/p&gt;&lt;p&gt;When you sweep the voltage, please try to use smaller voltage step.&lt;\/p&gt;&lt;p&gt;&nbsp;&lt;\/p&gt;&lt;p&gt;If the zero bias cannot converge, please first disable the high field mobility, and do a test. Then plot the fields and see where the high field is located. Then add &#8220;constraint&#8221; mesh to limit its largest edge length. Repeat the above tests again.&lt;\/p&gt;&lt;p&gt;&nbsp;&lt;\/p&gt;&lt;p&gt;&nbsp;&lt;\/p&gt;&lt;p&gt;&nbsp;&lt;\/p&gt;&lt;p&gt;&nbsp;&lt;\/p&gt;<\/p>\n","protected":false},"template":"","class_list":["post-236411","reply","type-reply","status-publish","hentry"],"aioseo_notices":[],"acf":[],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/replies\/236411","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/replies"}],"about":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/types\/reply"}],"version-history":[{"count":0,"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/replies\/236411\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=236411"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}