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← ScienceWhich 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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