A bright future: Seeking a third generation of better-performing solar cells

https://techxplore.com/news/2022-04-bright-future-better-performing-solar-cells.html

"satellite valleys in the band structure of semiconductors, where hot carriers can be temporarily stored without losing energy... The scientists were able to elucidate this approach in an indium-gallium-arsenide and aluminum (InGaAs/InAlAs) based semiconductor material that is sensitive to light, and therefore, a potential material for solar cells"