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Which consequence results when defects alter the band gap?

A)Increased electrical carrier recombination rate
B)Enhanced phonon scattering efficiency
C)Reduced average crystal lattice spacing
D)Increased material's plastic deformation threshold

💡 Explanation

Defects introduce energy levels within the band gap, which provides pathways for electrons and holes to recombine via Shockley-Read-Hall recombination. This decreases the carrier lifetime because the increased recombination rate rather than affecting phonon scattering.

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