Question

Can we take one slab of $p$-type semiconductor and physically join it to another $n$-type semiconductor to get $p-n$ junction?

• A. $Yes$
• B. $No$
• C. It depends on the hole and electron concentrations on $p$ and $n$-side
• D. Only when a $p$-type semiconductor is soldered with an $n$-type semiconductor

Answer 1

Answer: (B)

No, A $p$ - $n$ junction is formed when a $p$-type semiconductor is formed alongwith an $n$-type semiconductor on a single intrinsic semiconductor.