Ty mate, but that doesn't answer the question why since on one side a large +charge from the donor ions is building , why it just not pull some of the electrons from the acceptor ions into the N regionCWatters said:
I get it now, thank you for ur answers:-)CWatters said:There is some reverse current but it's very small because it's the minority carriers involved. For example in the P-type material the majority charge carriers are holes. It's better to think of electrons that are injected from the -ve as reducing the number of holes available making it less conductive, rather than being free electrons able to go across the barrier.
https://en.wikipedia.org/wiki/Reverse_leakage_current
A reverse PN junction is a type of semiconductor device where the P-type and N-type materials are connected in a way that creates a depletion region between them. This depletion region acts as an insulator, preventing current flow in the reverse direction.
No, in a reverse PN junction, there is no current flow. The depletion region acts as an insulator, preventing any flow of electrons or holes in the reverse direction.
If a reverse voltage is applied to a PN junction, the depletion region widens, increasing the barrier to current flow. This results in a higher resistance and effectively blocks any current from flowing in the reverse direction.
No, a reverse PN junction cannot conduct electricity. The depletion region acts as an insulator, and without any free charge carriers, there is no mechanism for current to flow in the reverse direction.
A reverse PN junction is an essential component in electronic devices as it helps to control the flow of current. By applying a reverse voltage, the depletion region widens, effectively blocking any current from flowing in the reverse direction. This allows for precise control and regulation of current flow in electronic circuits.