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Which mechanism limits photovoltage when surface electronic states induce band bending?

A)Surface recombination diminishes carrier separation
B)Impurity doping creates depletion region
C)Auger scattering inhibits charge transport
D)Phonon scattering dominates electron mobility

💡 Explanation

Surface recombination limits photovoltage, because surface states trap charge carriers, leading to Shockley-Read-Hall recombination via mid-gap states; therefore, fewer photo-generated carriers contribute to the voltage, rather than the bulk recombination mechanisms.

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