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← ScienceWhich consequence results when dopants narrow the semiconductor band?
A)Increased conductivity with carrier concentration✓
B)Reduced electron-hole recombination lifetime
C)Enhanced piezoelectric polarization magnitude
D)Decreased dielectric constant temperature sensitivity
💡 Explanation
Increased conductivity occurs because of the *band gap narrowing*, increasing the available charge carriers at a given temperature. Therefore doping increases conductivity rather than reducing it, because carrier concentration is the main limiting factor.
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