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← ScienceWhich consequence results when a MOSFET's gate oxide layer dopants contaminate single crystal silicon source lattice?
A)Subthreshold leakage current increases sharply✓
B)Thermal runaway becomes much more likely
C)Gate capacitance value plateaus unexpectedly
D)Reverse recovery time decreases significantly
💡 Explanation
Increased subthreshold leakage occurs because dopant migration causes localized disruptions to the crystal lattice. This lowers transistor threshold voltage because of increased surface states; therefore more devices conduct at incorrect levels, rather than thermal runaway.
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