Question:medium
The electron density of intrinsic semiconductor at room temperature is \( 10^{16} \,\text{m}^{-3} \). When doped with a trivalent impurity, the electron density is decreased to \( 10^{14} \,\text{m}^{-3} \) at the same temperature. The majority carrier density is
The electron density of intrinsic semiconductor at room temperature is \( 10^{16} \,\text{m}^{-3} \). When doped with a trivalent impurity, the electron density is decreased to \( 10^{14} \,\text{m}^{-3} \) at the same temperature. The majority carrier density is
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Always use $np = n_i^2$ to find unknown carrier concentration.
Updated On: May 2, 2026
- $10^{16} \,\text{m}^{-3}$
- $10^{18} \,\text{m}^{-3}$
- $10^{21} \,\text{m}^{-3}$
- $10^{20} \,\text{m}^{-3}$
- $10^{19} \,\text{m}^{-3}$
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The Correct Option is B
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