Question

Hole is nothing but space left by electron, BUT how does hole move in semiconductor?

Answer 1

Hole does not actually move. It gets filled but nearby filled areas lose electtrons: eee0eee becomes ee0eeee as one electron moves right.

Answer 2

How do bubbles move in water if it's just a hole? It's nothing but space left by the water.

If you think that's not a good example, imagine the bubble travelling up a clear plastic straw.

Answer 3

Bubble is full of air with air pressure. A true vacuum would be filled and lower the overall preasure.

Answer 4

The only way a vacuum in water would not fill up is if the water has a force exerted on it which is so strong that the pressure of the vacuum is canceled out.

Answer 5

It's a metaphor, take it easy @wio .

Answer 6

Yeah, but is there air pressure keeping electrons apart? Why wouldn't they naturally fill the hole since it is lower charge?

You gotta consider the cracks in the analogy.

Answer 7

The analogous feature to keeping electrons apart is that they're all negatively charged, and like charges repel. Additionally, the electrons aren't just in free space; no, instead they are on a wire hopping from one proton to the next... And by hopping, I of course mean that the electrons are using the electric field as a giant pogostick.

Answer 8

But relatively speaking the electron in front of the hole has a guy behind him too close for comfort so he'd naturally be inclined to move forward to get more space.

The question is a bit weird.