Pdf P-n Junction Diode Animation

Pdf p-n junction diode animation

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When a diode is connected in a Zero Bias condition, no external potential energy is applied to the PN junction. However if the diodes terminals are shorted together, a few holes majority carriers in the P-type material with enough energy to overcome the potential barrier will move across the junction against this barrier potential.

Pdf p-n junction diode animation

Likewise, holes generated in the N-type material minority carriers , find this situation favourable and move across the junction in the opposite direction.

This transfer of electrons and holes back and forth across the PN junction is known as diffusion.

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When a diode is connected in a Forward Bias condition, a negative voltage is applied to the N-type material and a positive voltage is applied to the P-type material. If this external voltage becomes greater than the value of the potential barrier, approx.

Pdf p-n junction diode animation

This is because the negative voltage pushes or repels electrons towards the junction giving them the energy to cross over and combine with the holes being pushed in the opposite direction towards the junction by the positive voltage.

When a diode is connected in a Reverse Bias condition, a positive voltage is applied to the N-type material and a negative voltage is applied to the P-type material. The positive voltage applied to the N-type material attracts electrons towards the positive electrode and away from the junction, while the holes in the P-type end are also attracted away from the junction towards the negative electrode.

Pdf p-n junction diode animation

The net result is that the depletion layer grows wider due to a lack of electrons and holes and presents a high impedance path, almost an insulator. The result is that a high potential barrier is created thus preventing current from flowing through the semiconductor material.

Pdf p-n junction diode animation

Skip to main content. Site Search Search. Forward Biased PN Junction Diode: When a diode is connected in a Forward Bias condition, a negative voltage is applied to the N-type material and a positive voltage is applied to the P-type material.

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Reverse Biased PN Junction Diode: When a diode is connected in a Reverse Bias condition, a positive voltage is applied to the N-type material and a negative voltage is applied to the P-type material.

Category: Electronics Animated Tutorial.

PN Junction

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