The optimal module for modeling the attenuation of solar radiation intensity.

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Hello,

I am trying to model the following situation and would appreciate your advice on the appropriate module and boundary conditions:

1.There is a cylindrical silicon rod. 2.I want to determine how deeply sunlight can penetrate and be absorbed in the silicon rod when it is incident from above. Specifically, I am interested in the reduction of intensity with depth. 3.I am not concerned about the thermal effects; my focus is solely on understanding the extent of light absorption.

Previously, I used the Electromagnetic Waves, Frequency Domain module for analysis, but the intensity (electric field) did not decrease with depth, making me question the reliability of the results. Therefore, I am seeking assistance.

Your guidance would be greatly appreciated.


2 Replies Last Post 2025年1月7日 GMT-5 20:41

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Posted: 3 weeks ago 2025年1月2日 GMT-5 13:58

If you are modeling in emw my guess is that you are only including the effect of finite resistivity on absorption. In silicon the absorption is (mostly) due to band to band transitions.

Your options are: (1) use the semiconductor module (2) enter real and imaginary n and k values into a table and use interpolation (3) use a tabulated absorption coefficient (4) maybe a few more.

If you are modeling in emw my guess is that you are only including the effect of finite resistivity on absorption. In silicon the absorption is (mostly) due to band to band transitions. Your options are: (1) use the semiconductor module (2) enter real and imaginary n and k values into a table and use interpolation (3) use a tabulated absorption coefficient (4) maybe a few more.

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Posted: 2 weeks ago 2025年1月7日 GMT-5 20:41

I really appreciate your reply. I will try it!.

I really appreciate your reply. I will try it!.

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