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← ScienceWhich outcome results when a silicon semiconductor’s quantum dot size decreases?
A)Coulomb blockade effect becomes significant✓
B)Electron-phonon coupling becomes dominant
C)Dielectric breakdown field is reduced
D)Minority carrier diffusion length lengthens
💡 Explanation
The Coulomb blockade effect dominates at smaller sizes because the charging energy increases as the dot size diminishes. Therefore, electron transport is significantly affected due to increased single-electron charging, rather than phonon interactions or material properties.
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