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← ScienceWhich outcome occurs when a silicon crystal is heavily doped?
A)Increased free carrier concentration✓
B)Reduced intrinsic carrier concentration
C)Higher energy band gap
D)Lower electrical mobility limit
💡 Explanation
Increased free carrier concentration results from increased dopant atoms, because doping deliberately introduces impurities, which contribute extra electrons or holes via the mechanism of charge carrier generation; therefore, conductivity increases, rather than a decrease, and this differs greatly from changing mobility constraints.
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