New quantum material promises up to 190% quantum efficiency in solar cells

https://techxplore.com/news/2024-04-quantum-material-efficiency-solar-cells.html

"average photovoltaic absorption 80%, high photoexcited carrier generation rate, external quantum efficiency 190%... distinctive intermediate specific energy level band states have energy levels within optimal subband gaps of around 0.78 and 1.26 electron volts... high UV, visible absorption levels... generating/ collecting >1 electron from each high-energy photon... capture photon energy otherwise lost through reflection, production of heat... Cu-intercalated GeSe/SnS, via van der Waals gaps"