Electroluminescence Image Generation

[Sagnikbas]

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• I have checked Solcore’s documentation and could not find the answer.
• I haven’t found any other issue on a related topic.

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  From local voltage map how can we generate Electroluminescence image using Solcore?
  Electroluminescence intensity = Cexp(Vi/Vt)
  Can you suggest a way how can we get the intensity map?

[dalonsoa]

This is avery good question and something we have been willing to do for a long time.

To get the electroluminescence intensity map, you need to make some assumptions about what term of the two diode equation (the one given by I01 and n1, or the one given by I02 and n2) represents the radiative recombination, and use those coeficients in your formula above.

In the simplest case scenario, all the radiative recombination will come from the first term - and all the recombination from that term will be radiative - therefore C=I01 and Vt=n1 kb T. However, depending on what material your device is made of, that might have no relationship whatsoever with the real thing.

In any case, the number above will give you the total electroluminescence emitted in all directions. If you want to compare with some experimental data, you will need to incorporate some geometry factor that, unfortunately, cannot be calculated easily. Normally, some sort of callibration is required. Have a look at this paper we wrote a few years ago - although we did not compared with simulated thata.

I hope this helps. If you are willing to contribute to solcore with a method to calculate the electroluminescence mapping - even in the simplest case - that will be really helpful.