Does the hole in a PNP transistor really move…? Holes and electrons are twin brothers??????

 

Vidyasagar Sir • October 21, 2012 • 0 Comments

If you consider the internal atomic structure of a PNP transistor, you will see that the emitter layer and the collector layer, together contain a large amount of holes. All these holes are actually within the atoms of trivalent impurity like Aluminium.

Now if you consider this structure, as shown below, then it is so vivid that these holes are immobile and cannot move from one place to another.

But I don’t understand still, since my last 30 years of teaching experience, that how these so called teachers go on telling the students that…

“When a PNP transistor is forward biased, the HOLES, migrate from emitter layer into base layer and then into collector layer…!"

They also say, that…

"Now all the HOLES in collector layer, are then attracted towards the negative terminal of Vbc battery connected to the transistor, and then they come back into emitter layer again…!"

What a false, statement it is…! Shame on them…!

Why they don’t understand that the HOLES are actually IMMOBILE, and CANNOT move from one place to another…!