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← ScienceWhich effect results from quantum mechanical tunneling in the wave functions of MOSFET transistors?
A)Increased subthreshold leakage current✓
B)Reduced gate oxide breakdown voltage
C)Enhanced channel carrier mobility
D)Elevated threshold voltage sensitivity
💡 Explanation
When electrons tunnel through the gate oxide's potential barrier, this occurs because the wave functions penetrate classically forbidden regions, resulting in unexpected current flow, even when the transistor is nominally off. Therefore increased subthreshold leakage current results, rather than breakdown, mobility enhancement, or threshold drift which require thermal or material defects.
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