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← ScienceWhich outcome results when dopants concentrate non-uniformly within a crystal lattice during semiconductor production?
A)Localized variations in carrier mobility✓
B)Increased overall thermal conductivity
C)Uniform enhancement of electron tunneling
D)Suppressed formation of excitons
💡 Explanation
Non-uniform dopant concentration causes localized variations in carrier mobility because dopant atoms disrupt the crystal lattice's periodicity, affecting electron flow through the mechanism of impurity scattering. Therefore, carrier mobility varies spatially, rather than uniformly increasing conductivity or suppressing exciton formation.
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