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Which risk increases when quantum dots reach saturation limits?

A)Auger recombination diminishes quantum efficiency
B)Phonon bottleneck slows electron cooling
C)Electron trapping hinders exciton decay
D)Quantum tunneling enhances optical saturation

💡 Explanation

Auger recombination becomes dominant at high exciton densities because many-body interactions release energy non-radiatively via the Auger effect, therefore diminishing quantum efficiency, rather than radiative decay which would contribute to bright luminescence.

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