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← ScienceWhich outcome occurs when crystalline silicon, used in a high-power semiconductor, experiences significant heat-induced lattice vibrations?
A)Lowered electron mobility and efficiency✓
B)Increased piezoelectric charge generation
C)Enhanced quantum tunneling conductivity
D)Reversible crystal structure phase transition
💡 Explanation
Heat-induced vibrations scatter electrons, decreasing mobility known as phonon scattering, because the electron's mean free path reduces due to increased collisions. Therefore, conductivity снижается rather than other effects like piezoelectricity, which need specific crystal asymmetries.
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