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Which outcome occurs when high voltage forms defects in perovskite solar cells?

A)Increased ion migration and device degradation
B)Enhanced light absorption and power generation
C)Improved electron mobility, reduced resistance
D)Decreased material density; thermal expansion

💡 Explanation

High voltage induces the Frenkel defect mechanism where ions move, hence increasing ion migration and cell degradation, because vacancies promote diffusion. Therefore, lifetime decreases; rather than improving performance as in options B/C.

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