Just wanted to say that your explanations were very clear and understandable. I’m studying for a Ham radio exam and these videos really helped me understand some of the basic electronic stuff that wasn’t covered well in the manual.
It is often said either hole or electron move. but in my view, "hole" movement is just imagination of what really moving around is electron and the hole position is the result of electron moving under electric field. In fact, the hole (or positive charge) is the result of proton of its atom which is fixed to the lattice and so the proton is never really moved around.
Hey David! One question, Any ideas on how can we determine the minimum energy required for the electrons to get itself out of the covalent bond? Assuming we know the temperature?
sorry if this is a dumb question, but: if the electron leaves a hole, where does this positive charge come from? From my knowledge, the protons can't leave the nucleus of an atom... Also, what happens to the movement of the electrons when they share valence electrons?
peace bewith u - the atom as a whole entity will have one less electron, so the proton/electron ratio is no longer equal which means the atom as a whole will have a positive charge.
