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Which risk significantly elevates when semiconductor feature size decreases?

A)Increased quantum tunneling effects
B)Reduced electron-phonon scattering
C)Higher electron mobility saturation
D)Lower gate oxide breakdown voltage

💡 Explanation

Increased quantum tunneling allows electrons to pass through insulating layers, because feature size decreases, thus barrier width diminishes, therefore leakage current rise exponentially rather than linearly with voltage due to classical electron transport.

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