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← ScienceWhich outcome increases during electron transition in a tunnel diode when substrate temperature decreases?
A)Zener breakdown voltage increases
B)Thermionic emission rate increases
C)Quantum tunneling current increases✓
D)Recombination current becomes dominant
💡 Explanation
Lower temperatures enhance electron coherence, bolstering the quantum tunneling current across the depletion region because quantum mechanics dictates that electrons can pass through energy barriers. Therefore tunneling current grows, rather than thermionic emission, due to reduced thermal energy.
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