"Perovskite solar cells have the potential to be made more cheaply and simply than other solar cells, as well as to produce more power in a given area.
The team achieved an efficiency record of 22.6 percent."
https://techxplore.com/news/2022-02-solar-cell-efficiency-bright-future.html
>>easier to manufacture.
That's good news too. Watts per dollar is generally a more important metric than watts per cm^3
>>titanium
I think that's good news too. "Titanium is present in the Earth's crust at a level of about 0.6% and is therefore the fourth most abundant structural metal after aluminum, iron and magnesium."
http://metalpedia.asianmetal.com/metal/titanium/resources&production.shtml
I was curious about that because during the Cold War, Ti was considered a strategic resource. Back then, we couldn't buy climbing gear made of titanium. That changed with the fall of the Soviet Union and Ti climbing gear became widely available and relatively cheap. I don't think I understand current Ti markets. But all these "green" technologies are "black" somewhere along the process. As the bumper sticker says, "If it's not grown, it's mined."
>Perovskite
IIRC, this is the solar cell that they can produce by an inkjet printing technology. Fast & cheap as compared to silicon solar cells.