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130% Efficiency….One of those articles that challenge accepted physics but buried in some pop sci specialty, particularly dealing with silicon nano materials. Overunity???

Quote: “The external quantum efficiency of a device is 100% when one incoming photon generates one electron to the external circuit. 130% efficiency means that one incoming photon generates approximately 1.3 electrons.

The researchers found out that the origin of the exceptionally high external quantum efficiency lies in the charge-carrier multiplication process inside silicon nanostructures that is triggered by high-energy photons. ”

https://phys.org/news/2020-08-black-silicon-photodetector-efficiency-limit.html