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← ScienceWhich mechanism reduces thermal conductivity in semiconductor alloys?
A)Phonon scattering disrupts band structure✓
B)Increased electron-electron interactions occur
C)Fermi level shifts into bands
D)Enhanced band gap allows tunneling
💡 Explanation
Alloying changes composition, therefore phonon scattering increases, disrupting phonon band structure, decreasing thermal conductivity, rather than electronic effects causing thermal changes. The mechanism is phonon scattering.
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