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← ScienceWhich consequence results when crystal lattice dislocation-induced band gaps shift?
A)Increased semiconductor recombination rates✓
B)Enhanced phonon thermal conductivity
C)Shifted plasmon resonance frequency
D)Reduced electron effective mass
💡 Explanation
Higher defect densities in semiconductors can cause dislocations which create localized energy states and modify the band gap structure. This increases Schockley-Read-Hall recombination, reducing carrier lifetimes, because electrons and holes can now recombine via these mid-gap states rather than the band-to-band transition.
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