I do see that a ferroelectric perovskite can do 22%. Maybe this could be the outer protective layer for the perovskite cell. Isn't the main perovskit engineerin

I do see that a ferroelectric perovskite can do 22%. Maybe this could be the outer protective layer for the perovskite cell. Isn't the main perovskit engineering issue the degradation when exposed to the atmosphere? Ferroelectric seem to do other interesting thing, like harvest from ultraviolet, and exhibit some "bulk effects" that exceed "theoretical" maximums, but obviously none of that has been found to make a usable commercial cell. I hope PV research is still being aggressively funded. It seems to me that solar cell costs could be dropped another 50-75% under silicon with the right combination of perovskite and other materials. The future of our climate hinges on it.