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← ScienceWhich phenomenon results when increased temperature widens the band gap of silicon?
A)Increased electron-hole recombination rate✓
B)Increased piezoelectric voltage output
C)Increased thermoelectric power generation
D)Decreased reverse saturation current
💡 Explanation
Increased temperature raises electron energy, thus widening silicon's band gap, therefore increasing electron-hole recombination rate because more electrons attain sufficient energy to jump bands, rather than reduced recombination occurring at lower temperatures with smaller band gaps.
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