Q 12-14-041JEE MainJEE Main 2026 (5 Apr, Shift 2)Easy
In a semiconductor $p$-n diode, the doping concentrations on $p$-side and $n$-side are $10^{15}$ atoms/cm$^3$ and $10^{18}$ atoms/cm$^3$, respectively. Which one of the following statements is true?
Answer: (B) The depletion region width is more on p-side compared to that in n-side
Concept. The depletion region holds equal and opposite charge on the two sides. The lightly doped side has fewer ions per volume, so it must be wider.
Answer. Wider on the p-side (Option B).
Solution by Sreeraj P, M.Sc Physics
