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← ScienceWhich risk increases when a semiconductor's band gap narrows?
A)Reduced reverse breakdown voltage✓
B)Increased electron-hole recombination
C)Decreased intrinsic carrier concentration
D)Lower electron mobility value
💡 Explanation
A narrower band gap reduces the energy required for electrons to move freely, thereby decreasing reverse breakdown voltage because a small thermal fluctuation bridges the remaining gap, therefore breakdown occurs more easily, rather than needing a strong electric field.
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