Which outcome accelerates the destabilization of perovskite solar cell structure during prolonged light exposure in humid conditions?

💡 Explanation

When exposed to light and humidity, iodide ion migration occurs because the perovskite structure is not perfectly stable; this induces halide segregation into distinct phases which stresses the lattice and lowers efficiency. Therefore, iodide ion migration promotes phase segregation, rather than passivation, stabilization or slowing efficiencies which occur under different environmental factors.

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