Heat-resistant nanophotonic material could help turn heat into electricity

 https://phys.org/news/2022-09-heat-resistant-nanophotonic-material-electricity.html

"destructive interference to reflect infrared energy while letting shorter wavelengths pass through. This could potentially reduce heat waste in thermophotovoltaic cells, which convert heat into electricity but can't use infrared energy, by reflecting infrared waves back into the system. The material could also be useful in optical photovoltaics, thermal imaging, environmental barrier coatings, sensing, camouflage from infrared surveillance devices and other applications"

Related:

When heat turns into electricity at 1000 °C.
https://www.innovations-report.com/power-and-electrical-engineering/when-heat-turns-into-electricity-at-1000-c/

Decoding thermophotovoltaic efficiency
https://techxplore.com/news/2024-02-decoding-thermophotovoltaic-efficiency.html