Question

Give any three differences between $n$-type and $p$-type semiconductors.

Answer 1

(1) : $n-type$ semiconductor is formed by doping a group 15 element in an intrinsic semiconductor whereas $p-type$ semiconductor is formed by doping a group 13 element in the intrinsic semiconductor.
(2) : Elements like phosphorous, antimony etc are the doping elements in $n-type$ semiconductor whereas gallium, aluminum etc. are the doping elements in $p-type$ semiconductor.
(3) : Electrons are the majority charge carriers in $n-type$ semiconductor whereas holes are the majority charge carriers in $p-type$ semiconductor.
(4) : Electron density is much greater than the holes in $n-type$ semiconductor whereas hole density is much greater than electrons in $p-type$ semiconductor.