As the step one mentioned, the coupled simulation calculates optoelectronic figures of merit, such as the IV curve, spontaneous emission power spectrum, and internal quantum efficiency. What we know for MQW is  https://optics.ansys.com/hc/en-us/articles/4408088112915-MQW-Solver-Physics
and for CHARGE I guess you know the physics and the questions solved. Since they do not provide more details, it is hard for me to write more here. What is known is from photonics simulation:Â
[1] Title: "CMOS Sensor Camera Sensor Characterization Ansys Optics", URL: https://optics.ansys.com/hc/en-us/articles/360062131614-CMOS-Sensor-Camera-Sensor-Characterization.
[2] Title: "CMOS Green's function IQE method Ansys Optics", URL: https://optics.ansys.com/hc/en-us/articles/360042358614-CMOS-Green-s-function-IQE-method.
[3] Title: "Solar cell methodology Ansys Optics", URL: https://optics.ansys.com/hc/en-us/articles/360042165634-Solar-cell-methodology.
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I would strongly suggest that you purchase the license. You may try the one-month free license if you have not done so.
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