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← ScienceWhich outcome occurs within photovoltaic cells when light excites electron-hole pairs?
A)Increased current within depletion region✓
B)Decreased band gap in the lattice
C)Enhanced piezoelectric crystal vibrations
D)Elevated temperature limits recombination lifetime
💡 Explanation
Increased current occurs within the cell's depletion region because photoexcitation generates electron-hole pairs, and the built-in electric field separates them; therefore a current flows, rather than band gap changes or piezoelectric effects dominate which would occur from other excitations.
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