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Which outcome impairs semiconductor performance when exceeding temperature limits?

A)Intrinsic carrier concentration increases notably
B)Fermi level aligns with bands
C)Phonon scattering rates diminish notably
D)Electron-hole mobility sees enhancement

💡 Explanation

An increased temperature increases the available energy in the semiconductor. Increased energy causes greater thermal excitation which leads to exceeding band gap because electrons break free; therefore conductivity increases rather than remaining constrained.

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