Upconversion of infrared photons enables rapid organic synthesis under sunlight

https://phys.org/news/2023-02-upconversion-infrared-photons-enables-rapid.html

"zinc-doped CuInSe2 nanocrystals as a low-cost and environmentally-benign sensitizer for near-infrared-to-visible upconversion, which achieved external quantum efficiency of 16.7% for this spectral range... broadband light capturing of the near-infrared nanocrystals, these reactions were remarkably rapid under indoor sunlight, enabling, for example, polymerization of acrylates within just 30 seconds... boost the performance of photovoltaics, photoredox-catalysis and phototheranostics"