Question

In a semiconductor, which of the following statement is correct?

• A. At $0K$, Si is a super conductor.
• B. In a p-type semiconductor the acceptor level lies near the conduction band.
• C. Each donor atom contributes one hole.
• D. p - n junction is electrically neutral.

Answer 1

The correct option is D p - n junction is electrically neutral.

Generally Si is a semiconductor. In p type semiconductor acceptor level lies near the valence band and each donor atom contribute one electron. p-n junction electrically neutral because total charge is zero.