Even if the degradation could be repaired (e.g. after five years, restore a 28% panel to 31% efficiency), at grid scale, does it make financial sense to do the maintenance instead of replacing the panel when it falls below X%?
It would need to go to a clean room. And accessing the top lager is at odds with bonding the top glass well enough go protect it.
Methinks a better strategy would be trying to make them keep >17% efficiency even if the perovskite fails and just treating it as a temporary bonus for the early movers. Still sounds hard to manage the voltages as it fails though and would require a different strategy for the busbars even if it were viable.
It may not need to be wasted. There’s currently a price floor on used EV’s with degraded batteries because they can be used for home energy storage after their useful road life.
There could be a solid secondary market 20 years from now for panels that have dropped to say 20% efficiency where the surface area to yield ratio isn’t a factor (rural areas I would guess).
