Which factor increases when high-energy radiation impinges on a photovoltaic cell with no external load?

💡 Explanation

When high energy radiation hits a photovoltaic cell without a load, exciton formation greatly increases but the extra electrons cannot flow out, causing more electron-hole recombination at defects because photogenerated carriers cannot be extracted. Therefore, the recombination rate increases instead of efficiency changes or dark current effects, which are linked to different physical mechanisms.

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