JEE MAIN - Physics (2025 - 4th April Evening Shift - No. 19)
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) $\mathrm{n}_{\mathrm{e}} \mathrm{n}_{\mathrm{h}} \neq \mathrm{n}_i^2$
(where $\mathrm{n}_i$ is number of electrons or holes in semiconductor when it is intrinsic form)
(D) $\mathrm{n}_{\mathrm{e}} \mathrm{n}_{\mathrm{h}} \geqslant \mathrm{n}_i^2$
(E) The holes are not generated due to the donors
Choose the correct answer from the options given below :
Explanation
(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.
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