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Which risk increases when a quantum dot's confinement function is designed with steep potential barriers?

A)Reduced electron-phonon scattering rate
B)Increased resonant tunneling probability
C)Enhanced exciton binding energy
D)Higher sensitivity to surface defects

💡 Explanation

Increased tunneling emerges because the abrupt potential facilitates the *quantum tunneling* mechanism into adjacent regions, therefore, electrons can escape the dot more easily, rather than being confined, particularly at higher energies.

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