Consider a n-type semiconductor in which ne and nh are number of… | JEE Main 2025 (4 Apr, Shift 2)

Q18JEE Main 2025 · 4 APR · SHIFT 2Medium

Intrinsic & Extrinsic Semiconductors

Consider a n-type semiconductor in which $n_e$ and $n_h$ are number of electrons and holes, respectively.

(A) Holes are minority carriers

(B) The dopant is a pentavalent atom

(where $n_i$ is number of electrons or holes in semiconductor when it is intrinsic form) (D) $n_e n_h \geqslant n_i^2$

(E) The holes are not generated due to the donors

Choose the correct answer from the options given below:

Show answer and solution

Answer: (a)

(A) In n-type, holes are minority carriers: true. (B) The dopant is pentavalent: true.
(C) Mass action law gives $n_e n_h = n_i^2$ , so $n_e n_h \neq n_i^2$ is false; (D) is therefore not the intended relation either.
(E) Donors release only electrons; holes come from thermal pair generation: true.
So the answer is (a) (A), (B), (E) only.

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