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← ScienceWhich inefficiency increases in quantum dot flash memory when feature size decreases?
A)Increased electron tunneling probability✓
B)Decreased Coulomb blockade effect
C)Enhanced hot carrier injection
D)Reduced electron-electron interaction
💡 Explanation
Increasing dot density enhances electron WAVEFUNCTION overlap and thus tunneling; because electrons escape rather than remaining trapped for long-term storage resulting in data loss. Therefore, retention time decreases substantially, rather than enhanced charge storage effects.
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