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Which outcome occurs when high temperatures disrupt silicon band structure?

A)Intrinsic carrier concentration increases sharply
B)Fermi level shifts to band edges
C)Mobility remains perfectly constant
D)Recombination rate decreases significantly

💡 Explanation

As temperature rises in the silicon, thermal excitation leads to increased electron-hole pair generation by intrinsic semiconductor action. Because thermal energy overcomes the band gap, the carrier concentration elevates sharply, rather than carrier mobility remaining unchanged or the Fermi level shifting.

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