Which unintended consequence arises when rapidly annealing a perovskite solar cell absorber layer?

💡 Explanation

Rapid annealing can cause inhomogeneous heating, and therefore accelerates nucleation via Ostwald ripening, rather than uniform crystal growth. This forms parasitic phases, because larger undesired crystals grow at the expense of smaller desirable ones.

• Which mechanism allows a wireless power transfer system to efficiently transmit energy via inductive fields across a distance?
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