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Which risk increases significantly when temperature causes increased phonon activity in crystalline silicon?

A)Reduced electron mobility performance
B)Increased secondary electron emission
C)Enhanced X-ray diffraction contrast
D)Increased crystal lattice periodicity

💡 Explanation

Rising temperatures enhance phonon activity, which causes electron scattering via the electron-phonon interaction because the increased atomic vibrations disrupt electron flow through the material; therefore, electron mobility drops, rather than X-ray or lattice increases.

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