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Which risk increases when a quantum dot's band alignment weakens?

A)Increased electron-hole recombination rate
B)Enhanced lattice vibrational modes
C)Suppressed quantum confinement effects
D)Reduced thermal conductivity of phonons

💡 Explanation

Increased non-radiative recombination occurs where the **electron-phonon interaction** rises due to relaxed alignment; therefore energy dissipates through heat rather than luminescence. This happens because lattice vibrations couple more effectively, rather than maintaining distinct carrier populations.

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