In unbiased p-n junction diode

Step-by-step solution

In an unbiased p-n junction, the diffusion of charge carriers creates a depletion region containing immobile ions: negatively charged acceptors on the p-side and positively charged donors on the n-side. An electric field arises from these immobile charges, directed from the positive ions (n-side) to the negative ions (p-side). Consequently, the n-type side is at a higher potential than the p-type side. Option A is false due to the established potential barrier. Option B incorrectly reverses the electric field direc