I am trying to simulate an OSC including Extended Gaussian
Disorder Model (or equivalently pasveer mobility model) in silvaco, but the solution doesn't converge (it had this warnings and errors: "Error string found in output", "Newton algorithm did not converge in 5 iterations.","Bias step cut back more than 4 times. Cannot trap."). i tried to solve the problem by changing different parameters such as iteration limit, tolerances ,... but it didn't converge. i have attached my code. Could anyone advise on this convergence problem?
The convergence problem is mostly dependent on mesh spacing. Every model requires some specific mesh. so you should define the mesh as per model.... you cheeck the mesh and specific region where dense or wider mesh is needed................
Try to increase beam intensity gradually by changing "solve b1=1.0" to the following code:
solve b1=0.01
solve b1=0.1
solve b1=1.0
If you still have problem you can start from smaller values as well as smaller steps in increasing beam.
I would like to tell thanks to Mr. Sumit. My same problem was solved by carefully defining mesh.
Mr.Sumit: How dows one know which model requires wat mesh. for eg i m simulating iii nitrides based devices
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