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IQE of Photodiode

    • Meir Grajower


      Im traying to calculat the IQE of a photodiode using generation and using delta generation (as shown in this example but i get two differet resultes. Any idea how to debug it? 

    • Niki Papachristou
      Ansys Employee

      Hi Meier,

      Thank you for reaching out to us. Can you please provide more information on why you chose those two cases for your simulation? It is possible for your work to use a delta source for IQE similar to the CMOS example, and if you need an iteration of response (actual output for a given optical input) you can run optical simulation and import the generation data instead.

      Kind Regards,


    • Meir Grajower

      Hello Niki,

      Thank you for your answer. 

      The diode stracture is contact-P++-P-N-contact. I choosed to use the delta source becuse i have a lot of illumination cundition with the same diode profile and it is faster than running the simulations with improt generation.

      i thought the resulres would be the same (or very simmilar) but the valuse of the IQE and the trend (saturateion vs. increasing) is not the same.

      i don't know how to figure out  which simulation is the currect and why the resulutes are not the same.



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