Consider a n-type semiconductor in which $\mathrm{n}_{\mathrm{e}}$ and $\mathrm{n}_{\mathrm{h}}$ are number…

Consider a n-type semiconductor in which $\mathrm{n}_{\mathrm{e}}$ and $\mathrm{n}_{\mathrm{h}}$ are number of electrons and holes, respectively.
(A) Holes are minority carriers
(B) The dopant is a pentavalent atom
(C) $\mathrm{n}_{\mathrm{e}} \mathrm{n}_{\mathrm{h}} \neq \mathrm{n}_{\mathrm{i}}^2$
(where $n_i$ is number of electrons or holes in semiconductor when it is intrinsic form)
(D) $\mathrm{n}_{\mathrm{e}} \mathrm{n}_{\mathrm{h}} \geq \mathrm{n}_{\mathrm{i}}^2$
(E) The holes are not generated due to the donors Choose the correct answer from the options given below :
  1. (A), (C), (D) only
  2. (A), (C), (E) only
  3. (A), (B), (E) only
  4. (A), (B), (C) only

Solution

(A) n type semiconductor holes are minority carriers and $\mathrm{e}^{-}$are majority carriers
(B) Dopant are pentavalent atom.
(C) $\mathrm{n}_{\mathrm{e}} \cdot \mathrm{n}_{\mathrm{h}}=\mathrm{n}_{\mathrm{i}}^2$ for intrinsic semiconductor
(E) In $n$ type semiconductor primary source of holes generation are thermal excitation.

Asked in: JEE Main 2025 (04 Apr Shift 2)

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