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← ScienceWhich outcome occurs when applying strain to a semiconductor's crystal lattice?
A)The electronic band gap changes.✓
B)Fermi level remains constant.
C)Trap states near band edges vanish.
D)Impurity diffusion coefficient decreases.
💡 Explanation
Applying strain alters interatomic spacing; the electronic band structure changes through deformation potential, because this modifies electron energy levels therefore the band gap also shifts rather than the unchanged Fermi level under low strain.
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