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Which outcome occurs when impurities raise grain boundary resistance within polycrystalline silicon solar cells?

A)Reduced short-circuit current
B)Higher open-circuit voltage
C)Increased temperature coefficient
D)Enhanced electron mobility

💡 Explanation

Reduced current happens because the electron's Wave function collapse experiences increased scattering via grain boundaries, diminishing the carrier's collection probability. Therefore, short-circuit current decreases, rather than alternatives like increased electron mobility, which implies a reduction in scattering despite the higher resistance.

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