Researchers working at an Australian uni, and others around the world, have played around with various substances and " turned to a mineral called perovskite, a calcium titanium oxide crystal."
... " team of chemical engineers and material scientists then developed a revolutionary process to wrap or bind the nanocrystals in porous glass"
https://www.abc.net.au/news/2021-10-...lass/100578398
This is excellent news and of course will have flow on effects for all sorts of products, eventually