Question:
The electron concentration \( n_e \) and hole concentration \( n_h \) in semiconductor are related to the number of intrinsic charge concentration \( n_i \) as
The electron concentration \( n_e \) and hole concentration \( n_h \) in semiconductor are related to the number of intrinsic charge concentration \( n_i \) as
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In intrinsic semiconductors, the product of electron and hole concentrations is always equal to the square of the intrinsic charge concentration.
Updated On: Apr 7, 2026
- \( n_e n_h = n_i^2 \)
- \( n_e + n_h = n_i^2 \)
- \( n_e + n_h = 2n_i^2 \)
- \( n_e n_h = 2n_i \)
- \( n_e n_h^2 = n_i \)
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The Correct Option is A
Solution and Explanation
In intrinsic semiconductors, the product of the electron concentration \( n_e \) and hole concentration \( n_h \) is equal to the square of the intrinsic carrier concentration \( n_i \): \[ n_e n_h = n_i^2 \] This relation holds because in an intrinsic semiconductor, the number of electrons is equal to the number of holes.
Thus, the correct answer is (A).
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