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← ScienceWhich mechanism creates electronic blocking when a voltage is applied?
A)Formation of a Schottky barrier✓
B)Increase in electron-phonon scattering
C)Increased electron kinetic energy
D)Quantum tunneling probability reduction
💡 Explanation
A Schottky barrier creates a depletion region, because band bending occurs near the metal-semiconductor junction, pinning the Fermi level. This presents a potential barrier blocking electron flow rather than increasing scattering or electron energy; therefore it permits current rectification.
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