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problem about the 3 Dimesion GaAs PIN Photodiode

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Hello

I want to simulate a 3D GaAs PIN photodiode according to the application gallery guide (GaAs OIN Photodiode).

In my simulation (please see the attachment), except for the analytic doping profile, I totally built the PIN photodiode in 3D according to the guiding PDF. But it cannot compute, it always shows some information as follow

Undefined value found. - Detail: Undefined value found in the equation residual vector. There are 50 degrees of freedom giving NaN/Inf in the vector for the variable comp1.Ne. There are 19 degrees of freedom giving NaN/Inf in the vector for the variable comp1.Ph.

And I noticed the difference between the 2D model and 3D model when it computing, there are two segregated solvers appare, but the solvers are not converged.

I have simulated both 2D and 3D structures in RF model, but there is no difference in setting. What is the difference between 2D and 3D models in Semiconductor-Electromagnetic Waves Coupling? What should be set (changed) in my simulation (the attached file)?

Thanks in advance for your help and answers.


2 Replies Last Post 10 janv. 2022, 20:33 UTC−5
Jeff Hiller COMSOL Employee

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Posted: 3 years ago 10 janv. 2022, 14:46 UTC−5

Hello Lucas,

Yor post mentions an attached model file, but there is no attachment to your post.

Best,

Jeff

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Jeff Hiller
Hello Lucas, Yor post mentions an attached model file, but there is no attachment to your post. Best, Jeff

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Posted: 3 years ago 10 janv. 2022, 20:33 UTC−5
Updated: 3 years ago 10 janv. 2022, 20:33 UTC−5

Hello Lucas,

Yor post mentions an attached model file, but there is no attachment to your post.

Best,

Jeff

sorry,please see the attachment.

>Hello Lucas, > >Yor post mentions an attached model file, but there is no attachment to your post. > >Best, > >Jeff sorry,please see the attachment.

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