Perovskite can boost solar panel's efficiency to 33%

In case you don't subscribe to Medium, here's the WP article: https://en.wikipedia.org/wiki/Perovskite_solar_cell

and a science paper from July: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7399695/

We keep hearing about this, but perovskites are supposed to be very sensitive to environmental damage: being outside is bad for them. But there is little demand for indoor solar panels.

I read it as perlite, the volcanic foam