Comment by SquareWheel

As I understand it, silicon cells have largely been optimized to near their peak potential. There's not much room left for improvements at this point.

Organic and perovskite cells have a higher potential efficiency. Just like was the case with silicon, it will take years of development and incremental improvements to see higher efficiencies in these technologies. Silicon cells were also not very good at the start of their development.

In that sense perovskite has the potential to be the next generation of solar cell. New developments, such as the one demonstrated in the linked paper, are just a step towards that ultimate goal of more efficient solar.

I'm not an expert in this field, so please feel free to correct any mistakes I've made.