Nontoxic material found to be ultra-strong solar energy harvester

https://techxplore.com/news/2022-08-nontoxic-material-ultra-strong-solar-energy.html

"inhomogeneous distribution sodium and bismuth ions... localized electronic states... charges... tens of microseconds... 100 times longer than other semiconductors.... trapped in these states and can only move by hopping between states, which ultimately limits their ability to move and be extracted as electricity... atomic defects... negligible role in NaBiS2... transport of charges  dominated by localized states... controlling degree disorder... NaBiS2... stable in air... without encapsulation... long-term durability"

Related: Using microwaves for low-cost production of alkali metallic phosphate nanocomposites for use in sodium-ion batteries

https://techxplore.com/news/2022-10-microwaves-low-cost-production-alkali-metallic.html