Question

In the depletion region of an unbiased $p-n$ junction diode, there are

• A. only electrons
• B. only holes
• C. both electrons and holes
• D. only fixed ions

Answer 1

Answer: (D)

only fixed ions

Answer 2

Depletion layer contains only fixed positive and negative ions, positive ions on $n$-side and negative ions on $p$-side.