JEE Main20254 Apr 2025Evening ShiftPhysicsSemiconductorsActual
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 (C) n _ e n _ h n _ i ^2 (where n_i is number of electrons or holes in semiconductor when it is intrinsic form) (D) n _ e n _ h n _ i ^2 (E) The holes are not generated due to the donors Choose the correct answer from the options given below :
Options
- A(A), (C), (D) only
- B(A), (C), (E) only
- C(A), (B), (E) only
- D(A), (B), (C) only
Correct answer
C. (A), (B), (E) only
Step-by-step solution
(A) n type semiconductor holes are minority carriers and e ⁻ are majority carriers (B) Dopant are pentavalent atom. (C) n _ e n _ h = n _ i ^2 for intrinsic semiconductor (E) In n type semiconductor primary source of holes generation are thermal excitation.