Electronic Devices - Semiconductors - Discussion

When diode is forward bias the depletion layer is vanished & holes & electrons combine at the junction therefore there are will be a current from p to n direction.

Diodes conduct current under forward bias because in forward bias the cathode of the diode is connected to negative terminal of a current supply source whiles the anode is also connected to the positive terminal of that source. So in this case electrons in the n side are excited across the PN junction leading into the p side where the combine with the holes. As the electrons combine with the holes, light photons are emitted.

And for diodes if the current is small diode does not work but if the current is more diode works and it the current is too much diode blows.

Avalached.

Please explain one more I didn't understand. Because of reverse bias it increases minority carriers n it will over come the barrier potential and destroyed the PN junction is it correct.