P-N junction of a semiconductor diode
Channel: HomoFaciens
Date: 2011-04-16

The working principle of a diode is treated at the 3D animated part of the video. The voltage-current characteristic of a silicon diode is recorded in forward and reverse direction at the second part.
See how the depletion layer is created between a p-type and a n-type region of a silicon crystal by recombination processes of a hole and an electron and how this barrier in potential is influenced by an external electric field.