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← ScienceWhich outcome occurs upon rapidly increasing voltage across a quantum tunneling diode with Fermi-Dirac distribution functions?
A)Increased current due to resonant tunneling
B)Decreased current due to increased reflection✓
C)Stable current due to Zener breakdown
D)Oscillating current due to Coulomb blockade
💡 Explanation
Upon voltage increase, carrier distribution broadens causing increased probability of electron states mismatch which enhances carrier reflection across barriers, reducing the tunneling current based on the Fermi-Dirac distribution function. Therefore decreased current from increased reflection results, rather than increased current, stable current, or oscillating current which require resonant conditions, higher voltages or specific device structures.
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