Could anyone advise on convergence problems in numerical simulation of illuminated photodetectors?

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Slobodan Mijalkovic

It is not clear if the convergence rate (the rate by which the residual error of the equations is decreasing) is slow or the CPU time of the simulation is large. The later could be due to the large number of discrete unknowns.

Nacer Debbar

Thanks Slobodan Mijalkovic,

It is the first that I am talking about, the residual (or the correction to the variables) to the equation decrease very slowly. Even sometime it shows certain oscillation.