Perovskites are interesting, but currently their life span is extremely poor. Up until recently the lifespan span of a perovskite cell has been days or months, we are just starting to see cells in the lab that may be able to make it years, but real life testing generally falls considerably short of lab testing. Silicon cells can live 25+ years.
I really hope the longevity issues can be worked out, cause doubling power output would be amazing!
If you want to see another promising tech, check out Quantum Dot Solar Cells.