Question

Fill in the blank
In p-n-p transistor the majority of the carriers are___________

Answer 1

Hint:
In a p-n-p transistor, the emitter in this type of transistor is “p – type” so it’s very simple that “p – type” will decide or be responsible for the majority carriers of the p-n-p type transistor.

Complete step-by-step answer:

P-N-P Type transistor
It is made of two p- type layers and one N- type layer .In this type; we add two P- type layers with two sides of N – type layer. In this way, we get a P-N junction and another N-P junction. We can compare P-N-P transistors with two diodes, whose N-N type semiconductors are joined, between the two diodes. One is called an emitter base diode or emitter diode and the other is called collector base or collector diode.
It is symbolically represented by the P-N-P transistor. As we all know that in a p-n-p transistor, the emitter in this type of transistor is “p – type” so it’s very simple that “p – type” will decide or be responsible for the majority carriers of the p-n-p type transistor.
And as we all know that the P- type semiconductor is a majority carrier of holes because a p-type semiconductor is a type of the semiconductor when a trivalent impurity is added to an intrinsic or pure semiconductor trivalent impurities such as Boron (B) gallium (Ga) Indium (In), aluminum (al) etc are called the acceptor impurity.
So a p-type semiconductor has more holes than an electron so the majority carriers of p type are the holes.

Note:
In pure conductor semiconductor is generally non conductor by adding two types of impurities we can make-
(A) P type semiconductor
(B) N type semiconductor