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← ScienceWhich consequence results when significant quantum confinement occurs inside a semiconductor nanocrystal?
A)Band gap energy increases visibly.✓
B)Increased electrical current tunneling.
C)Phonon scattering becomes negligible.
D)Intrinsic carrier concentration decreases.
💡 Explanation
When a semiconductor nanocrystal has dimensions near the exciton Bohr radius, quantum confinement shifts the energy levels higher because the energy is inversely proportional to the square of the confinement length scale. Therefore, the band gap increases rather than changes to another electrical property.
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