PN Junction Diode Explained

Understand semiconductor materials, doping, PN junction formation, depletion regions, barrier potential, and diode biasing.

PN junction diode
semiconductor
online
video
course
training
e-learning
engineering

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Course Duration

5 Minutes
Course Level

Beginner to Intermediate
Language

English
Subtittle Language

English
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Quiz

PN junction diode
semiconductor
online
video
course
training
e-learning
engineering

Description

This course explains the fundamentals of a PN junction diode, beginning with the basic electrical properties of conductors, insulators, and semiconductors. It uses silicon to explain how semiconductor conductivity is related to valence electrons and covalent bonding.

The course introduces doping and explains how trivalent and pentavalent impurities are used to create P-type and N-type semiconductors. It then shows how these materials are combined to form a PN junction and explains the movement of electrons and holes at the junction.

The course also explores the depletion region and barrier potential that form at the PN junction. Finally, it explains how a diode behaves under reverse biasing and forward biasing, demonstrating how the diode controls the direction of current flow.

What you will learn in this course

Understand the basic differences between conductors, insulators, and semiconductors
Explain the electrical properties of silicon
Explain the purpose and process of semiconductor doping
Understand how pentavalent impurities create N-type semiconductors
Explain how P-type and N-type materials form a PN junction
Understand the movement of electrons and holes at the junction
Explain how a diode allows or blocks current depending on its biasing