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← ScienceWhich outcome reduces solar cell efficiency due to defects?
A)Increased electron-hole recombination rate✓
B)Enhanced light trapping in crystal
C)Decreased semiconductor crystal lattice spacing
D)Improved surface passivation effectiveness
💡 Explanation
An increased electron-hole recombination rate lowers photovoltaic conversion efficiencies because Shockley-Read-Hall recombination increases when impurities introduce energy states within a silicon crystal's band gap; therefore electron-hole pairs recombine rather than contribute current.
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