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Which phenomenon causes decreased carrier mobility in semiconductor alloys?

A)Compositional disorder scattering
B)Increased piezoelectric polarization
C)Enhanced radiative recombination
D)Reduced Auger recombination lifetime

💡 Explanation

Compositional disorder introduces potential fluctuations that scatter charge carriers. This scattering increases the effective resistance, hence lowering mobility values because the carriers' mean free paths are reduced; therefore, mobility is reduced rather than increased, affecting alloy performance.

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