https://techxplore.com/news/2021-10-major-advance-family-semiconductor-materials.html Perovskites have been studied extensively for half a century by scientists dedicated to producing the promise of cheap solar power that is environmentally friendly. Along with a lot of other advances in recent years, this one makes it possible to begin mass producing them within three years, keep your fingers crossed! These first ones should approach the efficiency of silicon, but at a fraction of the cost. You can even layer this over silicon, and make more expensive solar cells. Other advances in batteries promise similar cost reductions and environmental benefits in the near future. There are perhaps a million or so people dedicated to making this happen, tomorrow.
