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← ScienceWhich outcome occurs when dopant concentration significantly raises semiconductor electron density?
A)Reduced electron-phonon scattering effects
B)Increased electron tunneling conductivity✓
C)Enhanced intrinsic carrier concentration
D)Suppressed Auger recombination process
💡 Explanation
When dopant levels heavily increase electron density, the Fermi level moves into the conduction band, causing band-bending and reduced depletion width which significantly raises electron quantum tunneling probability. Therefore tunneling conductivity increases, rather than reduced scattering, enhanced intrinsic carriers, or suppressed Auger recombination all requiring different conditions.
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