Question

Which of the following statements are true for ideal PN junction current voltage relationship?
(A) The abrupt depletion layer approximation applies.
(B) The Maxwell-Boltzmann approximation applies to carrier statistics.
(C) The concept of low injection applies.
(D) The total current is not constant throughout the entire pn structure.
Choose the correct answer from the options given below:

• A. (A), (B) and (D) only.
• B. (A), (B) and (C) only.
• C. (A), (B), (C) and (D)
• D. (B), (C) and (D) only

Hint:

Ideal PN junctions follow certain simplifications like the abrupt depletion model and low-injection conditions, which are valid for small forward bias and low current densities.

Answer 1

The Correct Option is B

For an ideal PN junction, the depletion layer approximation assumes a sharp boundary, while the Maxwell-Boltzmann statistics applies to the carrier distribution. The low injection assumption simplifies the behavior of the junction under forward bias.