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← ScienceWhich consequence results when interstitial impurities disrupt crystal lattice periodicity?
A)Phonon scattering increases, resistivity rises✓
B)Dielectric constant sharply decreases
C)Fermi level shifts towards valence band
D)Auger recombination efficiency decreases
💡 Explanation
Phonon scattering increases when impurities disrupt the lattice because the electron transport is impeded via Umklapp scattering. Therefore, resistance increases, rather than decreases, because this scattering inhibits mean free path under an applied potential.
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