I like the way you have explained the inner workings of how a
current moves. This is the clearest explanation I have seen so
far. I was searching the net to find a good explanation of how
semiconductors work. I was frustrated until I saw your article.
It seems to be that you have a natural ability to explain
complex things clearly and logically. However, I still have some
questions. I appreciate if you could further clarify those
points. 1. You say in the "Carge Carriers, Understanding the
Conduction" that, if there is open circuit the electrons cannot
be pushed into the material because of the "Space Charge
Neutrality". However, in the "Electrons and Holes", you explain
that there are holes at the valence band for electrons to fit
in. Then, why don't electrons go into those holes and make the
material negatively charged? Note that, these new electrons
coming into the material does not need to push any electrons out
of the material at the other end because there is enough space
(holes) for them to stay. 2. Th