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← ScienceWhich mechanism inhibits electron flow when a semiconductor's bandgap increases?
A)Increased electron-hole recombination rate✓
B)Reduced phonon scattering
C)Decreased thermal conductivity effects
D)Enhanced quantum tunneling probability
💡 Explanation
Increased bandgap causes a resistance to electron movement because electron-hole recombination increases with larger gaps and elevated energy barriers, thereby impeding conductivity rather than facilitating tunneling or phonon effects under specific circumstances.
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