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← ScienceIn a crystal of gallium arsenide under strain, which outcome significantly reduces electron mobility?
A)Reduced band gap energy
B)Increased phonon scattering✓
C)Enhanced electron tunneling
D)Suppressed impurity conduction
💡 Explanation
Increased phonon scattering reduces mobility because at lattice vibrations impede electron flow in the conduction band. Therefore, electron mobility decreases, rather than increases due to lower band gap energy or enhanced tunneling.
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