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Which outcome occurs when a quantum dot's size decreases below a certain critical limit?

A)Increased electron quantum mechanical tunneling
B)Reduced electron-phonon scattering processes
C)Enhanced optical absorption broadening
D)Decreased electron-electron Coulomb interactions

💡 Explanation

Enhanced electron quantum mechanical tunneling will become significant as the barrier width decreases on decreasing size of Quantum dot, because confinement increases quantum tunneling probability through potential barriers. Therefore, tunneling increases, rather than being confined, under these constraints.

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