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← ScienceWhich outcome occurs when the oxide layer thickness increases in a floating-gate MOSFET device?
A)Program/erase speed decreases exponentially✓
B)Data retention improves linearly
C)Threshold voltage shifts unpredictably
D)Read disturb errors become less frequent
💡 Explanation
When oxide thickness increases, Fowler-Nordheim tunneling probability decreases exponentially because tunneling current depends inversely on oxide thickness. Therefore, program/erase speed slows down exponentially, rather than linear retention improvement, unpredictable threshold shift, or reduced read disturb errors as oxide weakens field effects.
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