[HW5 Q3.4] Determining power conversion efficiency
Hi again, I have a question regarding the solar cell power conversion efficiency.
According to the lecture, to calculate this value, we should also take into account the photons that are not absorbed by the semiconductor due to their energy being lower than the bandgap.
However, in the question itself, it says to calculate the number of photons radiated by the blackbody as a function of frequency "which are all absorbed by the solar cell" -- I take this as meaning we should only consider the energy of the photons within the light frequency range referred to in Question 3.2.
Which approach should we take here? In principle I would assume we should consider the entire solar spectrum (ie. including the energy of photons which do not get absorbed) to compute the overall conversion efficiency...
I hope this makes sense!