No, the theory describes it (well mostly): https://en.wikipedia.org/wiki/Multiple_exciton_generation https://en.wikipedia.org/wiki/Multiple_exciton_generation

No, the theory describes it (well mostly): https://en.wikipedia.org/wiki/Multiple_exciton_generation https://en.wikipedia.org/wiki/Multiple_exciton_generation Someone please inform me if I'm missing a subtlety, but this seems like news for this specific kind of photodetector not physics in general.