Perovskite progress - but what’s the catch?

[Adsibob]

I see @Onoff expressed some excitement about Perovskite a couple of years ago (here). Here is some more exciting news: https://www.independent.co.uk/tech/perovskite-solar-cell-power-world-record-b2196762.html

Sounds good but what’s the catch? Or am I cynic?

 

 

[SteamyTea]

Longevity the last I heard.

They are generally cheaper to make, but not sure what the processes is when combined with silicon.

[Radian]

Perovskite has hydroscopic and temperature issues that naturally limit its life to months but we keep hearing about various treatments that are supposed to extend it to 20 years and beyond. Bit like how fusion is just around the corner.