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Which outcome is caused by wave function overlap between semiconductor grains?

A)Quantum tunneling enables charge transport
B)Increased phonon scattering limits mobility
C)Enhanced piezoelectricity induces deformation
D)Ferroelectric domains align spontaneously

💡 Explanation

Quantum tunneling transport through the nanostructure results because electron wave functions overlap between adjacent grains, allowing electrons to tunnel through. If electrons did otherwise need to get promoted to higher bands above material band gaps, transport would sharply drop off under bias.

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