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← ScienceWhich outcome occurs when quantum dots' thickness decreases below a critical dimension?
A)Increased electron energy level broadening✓
B)Decreased electron-phonon scattering rate
C)Enhanced Förster resonance energy transfer
D)Reduced Auger recombination efficiency
💡 Explanation
Decreasing quantum dot size increases the confinement energy affecting electron energy levels; because quantum tunneling becomes significant, the Heisenberg uncertainty principle causes increased energy level broadening; therefore, energy levels become less distinct; rather than discrete transitions, continuous bands are observed.
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