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Which 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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