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Which outcome occurs when the degeneracy within semiconductor quantum dot electron wave functions is lifted?

A)Sharp optical absorption spectral lines
B)Electrons tunnel readily through device
C)Exciton binding energy decreases rapidly
D)Thermal conductivity drops significantly

💡 Explanation

Sharp optical absorption lines arise with degeneracy lifted because quantum confinement effects reduce linewidths. This enhances the intensity of electronic transitions described by the oscillator strength, therefore sharp optical lines form, rather than broadened features dominanting due to thermal effects.

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